User`s Manual
Contents
1. Inserte Not inserted Term ON Term OFF Hs B Hc i 2 W Factory E r r setting Setting d 10 10 3 e e N N Zar Z o Figure 2 3 Aor D Figure 2 3 B or C Both terminators Other than both of the line terminators of the line A Terminator Terminator x rita Teac at Vek FR nio canoni Rei ce eat nes pis n EH i N i Fi 4 i i tot i i i 1 1 ot 1 i 1 TANI AY A B C D Figure 2 3 Party Line Connection N CAUTION When the data transfer mode is set to half duplex only set bit9 ON Communications may not function if other bits are set ON CONTEC COM 1PD FIT GY 11 2 Module Nomenclature and Settings The figure below shows the circuit associa setting switch 162850 or Equivalent SOUT SIN CTS RTS DCD DTR DSR RI Figure 2 4 Setting Switch Circuits ed with the data transfer mode setting switch and terminator LED Indicator RX TX 6 oF 4 Terminator 2 0 STA oO O Qh ENS in 0 02 ale o oF Terminator 1 2W 1000 Data transmission mode ji OTxD 3 OTxD ORxD p ORxD OCTS b OCTS2. enne nennen nnne 13 Types of Cable and Example Connections i 14 4 FUNCTIONS 15 Communication F nCtlOn scere RR IRR NIRO 15 Serial Data Transmission iii 15 RS 422A 485 Control Lines eee etr ree e alari 15 Send and Receive Data Buffers eco cete ee t ene rig een Oi 15 Setting the Baud Rate cei RR AEETI ESEPTA O HEREIN ERAS 16 CONTEC COM IPD FIT GY ill Automatic RTS Control Functions ener nnne nnne etre nnn 18 Gus doin E 18 B s Isolation 232 25 cce das tox o oo bre oi e p o e eet 18 Surge PrOteCHoni I OTEO EEEE 18 di USING THE MODULE 19 Compatible and Enhanced Modes nne nennen ntes 19 Operating under CPU SB30 SEries OLA RIE Rie 21 Checking Operations with the Diagnosis Program method i 23 What is the Diagnosis Program ii 23 Cheek Method ina eee e e TV TERT EUR ep Using the Diagnosis Program Details on T O Ports and Registers otc o eio eo rego oe deo ee suede 27 Interrupt Vector Registets eee enint eerie ot ete EEEO rishi init 31 Using an Interruption RR ES URINE RR 32 Iovi ERRORE I RI N 33 Compatible Mode FRE RAINERIO FARRELL 34 Enhanced Mode ede a snes douadvedcgussven cqusdeedagapunesentodeanearasenneenden 37 6 SYSTEM REFERENCE 41 Block Diastam i ARR RI IR 41 Equivalence Circuit strane AIA OA PIRANO RR PIRA FINI
3. Full Transmission Half dug lex When there are no Hal RTS and CTS When there are RTS and CTS RTS RTS CTS CTS lt S E E o os o oo oo oo Setting p E V Factory Bo Fo setting i 19 Bo He T Ei LS i ca Bi Bi e a e N S Sl SL W TXD is only used for data With above setting RTS and To connect RTS and CTS to transmission the sending CTS are connected in the the other unit and receiving modes should board communication is available be switched over using Communication is available the modem control without wiring of RTS and register CTS A CAUTION Do not use with bits 1 and 2 both set ON as this may result in damage to the module CONTEC 10 COM 1PD FIT GY 2 Module Nomenclature and Settings Setting of Terminator The terminator setting switch controls whether or not a terminator is inserted into each signal line Set the terminators on or off in accordance with the devices with which you are communicating The terminators on the module are 100Q resistors See Figure 2 4 for details on how to use terminators in a multi drop party line connection Each bit in the switch corresponds to a different signal line bit 7 for RxD bit 8 for CTS bit 9 for TxD and bit 10 for RTS Setting Procedure If you wish to use a terminator of other than 100Q set the terminator switch OFF and insert an external terminator Table 2 4 Setting of Terminator
4. SS C 3 mm cme A sel Figure 6 4 Physical Dimensions CONTEC 44 COM 1PD FIT GY COM 1PD FIT GY User s Manual CONTEC CO LTD April 2012 Edition 3 9 31 Himesato Nishiyodogawa ku Osaka 555 0025 Japan Japanese http www contec co jp English http www contec com Chinese http www contec com cn No part of this document may be copied or reproduced in any form by any means without prior written consent of CONTEC CO LTD 04202012 12102003 Management No A 46 812 04202012_rev8 Parts No LYDC897
5. receive buffer unsigned int ADR CH 0x3e8 0x2e8 I O address unsigned int rent CH 0 0 receive count fece Prototype E x void main void fresca Main SoS Se eS SS Se Se aura EE void main void unsigned char La de int dummy for i Dj i lt CH i I RS 232C initialize outp ADR i 0x3 0x80 Line Control Register DLAB SET outp ADR i 0x0 BPS amp Oxff Divisor Latch Baud Rate SET outp ADR i 0x1 BPS gt gt 8 amp Oxff outp ADR i 0x3 0x0 Line Control Register DLAB RESET outp ADR i 0x3 Ox7 Line Control Register Bit 0 1 Word Length 8 bit Bit 2 2 stop bit 7 for j 0 j lt 10 j hardware wait dummy inp 0x2ef outp ADR i 0x4 0x3 MODEM Control Register DTR RTS dummy inp ADR i 0x5 Line Status Register Dummy Read dummy inp ADR i 0xO Receiver Buffer Register Dummy Read dummy inp ADR i 0x2 Interrupt ID Register Dummy Read dummy inp ADR i 0x6 Modem Status Register Dummy Read outp ADR i 0x1 0x1 Interrupt Enable Register for j 0 j lt NUM j send CHO to CH1 while inp ADR 0 0x5 amp 0x20 transmitter empty outp ADR 0 0x0 j while inp ADR 1 0x5 amp 0x1 data ready rbuf 1 rcnt 1 unsigned char inp ADR 1 0x0 rent 1 CONTEC COM IPD FIT GY
6. 1Fh Interrupt vector register Fixed at CHO Reserved 0 Interrupt Figure 5 5 Input port Interrupt vector register CONTEC 28 COM 1PD FIT GY 5 Using the Module Output port 1 General Registers Starting I O D7 D6 D5 D4 D3 D2 D1 DO address 0h Transmit Holding Register THR 1h Interrupt Enable Register IER Xoff MODEM Receive Transmit Receive Interrupt Interrupt Interrupt Status Line Holding Holding 2 Interrupt Status Register Register Interrupt 2h FIFO Control Register FCR TX FIFO Trigger Trigger Enable MSB LSB 3h Line Control Register LCR Latch Break Parity Parity Enable Bits Enable 4h Modem Control Register MCR Clock IR Loop OP2 and Prescaler Mode Back INT Select Enable Enable Enable 2 2 5h ton Disabled 7h Scratch Pad Register SPR 7h Enhanced Mode Select Registers EMSR 3 ume me co niro Bit 3 Bit 2 1 For details see the Using an Interrupt section 2 These bits are enabled with EFR Bit 4 1 3 These registers are enabled with FCTR Bit 6 1 Figure 5 6 Output port General Registers Output port 2 Baud Rate Registers Starting I O D7 D6 D5 D4 D3 D2 DI DO address 0h LSB of Divisor Latch DLL 1h MSB of Divisor Latch DLM Figure 5 7 Output port Baud Rate Registers CONTEC COM 1PD FIT GY 29 5 Using the Module Output port 3 Enhanced Registers Starting I O D7 D6 D5 D4 D3 D2 DI DO address 0h FIFO Level
7. CommChk exe Check Method Obtain an RS 422A 485 cross cable If you do not have a cross cable you can use a switch on the board to perform testing of a single COM port using loopback communications See the figure below for the switch settings Switch setting for using a cross cable Switch settings for using loopback communications without a cross cable ON E 12345678910 m 12345678910 ON CONTEC COM IPD FIT GY 23 5 Using the Module Using the Diagnosis Program Starting the Diagnosis Program Run APISBP Apisbp ComDrv Utility CommChk CommChk exe from the supplied CD ROM Communication Settings COM Setup Specify the number of the COM port you wish to test If connecting two COM ports via a cross cable specify the respective COM ports in Devicel and Device2 When performing loopback communications on a single COM port set the same port number in both Device 1 and Device 2 Communication Settings Specify the Bits Second Data bits and other settings you wish to use 2 Diagnostic Program for Serial Communications Port COM Setup Test Item Device X I Open Close the port every time Device2 COM2 v Port Open Communication Settings Devicel Bits Second 9600 gt Device2 Data bits 8 xj M From Device to Device2 Stop Bits 1 X Parity None F IV From Device2 to Devicel Duplex
8. End 9 CONTEC COM IPD FIT GY 37 5 Using the Module Sample Program Sample program 2 UNITO lt gt UNITI Loop Test UNIT No 0 1 DEVICE ID 4 7 Mode Enhanced Mode Channel 0 1A0H 2A0H Baud Rate 115 200 bps Interrupt IRQ5 IRO7 include lt stdio h gt include lt conio h gt finclude lt dos h gt fur Constant EY define CH 2 no of channels define NUM 10 data of total number define BPS 1 baud rate define IRO5 0 IROS define IRQ7 i IRQ7 volatile unsigned char rbuf CH NUM receive buffer volatile unsigned int ADR CH 0x1a0 0x2a0 I O address volatile unsigned int intcnt CH 0 0 interrupt counter volatile int IrqLevel IRQ5 interrupt level int OrgMasterImr original IMR unsigned char IntVector 2 0x0d OxOf Jj interruput vector unsigned char PicMask 2 Oxdf Ox7f mask bit unsigned char IsrClear 3 0x65 0x67 0x61 ISR clear RSE Prototype r Sa ee void main void void Initialize void initialize void ChgVect void change vector void ResVect void restore vector void _interrupt far inthandler void interrupt handler void interrupt far OrgVect 0 original vector fh eee Initialize _ecstesseeoesseeoe o esee iice caedit ides a void
9. Part Close Type of data Devicel Binary Codes 01h to FFh Device2 aes C Ascii String Iterations number Se Message Iterations Once C Limited C Infinity Start Help ms 9 CONTEC 24 COM 1PD FIT GY Start test Click the Start button to start the test using the specified conditions View test result The test result is displayed in the Message window A successful completion message appears if the test completed OK 2 Diagnostic Program for Serial Communications Port COM Setup Devicel coms Device2 COME 2 Communication Settings Bits Second 9600 v Data bits Stop Bits Parity Duplex r Type of data Binary Codes 01h to FFh Ascii String Definition String SendCommand r Iterations Once C Limited C Infinity Num of teratior 10 m Test Item Open Close the port every time Port Open Device2 OK MV From Device to Device2 0K IV From Device2 to Devicel o Devicel OK Device2 DK Port Close Devicel OK Iterations number jl Message Normal Termination 5 Using the Module CONTEC COM IPD FIT GY 25 5 Using the Module I O Ports and Registers The module uses the XR16C2850 Exar Corporation upward compatible with the 16550 UART For details on the internal registers of the XR16C2850 and its control refer to the XR16C2850 data sheet In enh
10. oses oser mqs Compatible coma 6 o2ao o2a7 mos Enhanced mode Enhanced mode 8 950 9807 _iRqo Enhanced mode 9 9820 9827 mas Enhanced mode Enhanced mode B 9860 9867 Not Used Enhanced mode RQ9 Enhanced mode D ormo or mer Enhanced mode Reserved CONTEC 8 COM 1PD FIT GY 2 Module Nomenclature and Settings Table 2 2 I O Address When connected to the BX 300 Series Device ID BHO IO address h 0 oszs oser mas Compatible CoMs Enhanced mo Enhanced mo 6 o2co 02c7 mas Enhanced mo Enhanced mo s 9800 9807 moro Enhanced mod 9 9820 9827 mas Enhanced mo Enhanced mo B 9860 9867 Not Used Enhanced mod c o700 o707 moio Enhanced mode D omo or7 Re Enhanced mode E Reserved Reserved Reserved CONTEC COM IPD FIT GY 9 2 Module Nomenclature and Settings Setting Transmission Mode The data transfer mode setting switch is used to switch between full duplex and half duplex and to specify whether to use RTS CTS in full duplex mode Set the appropriate data transfer mode for the device with which you are communicating Bits 1 to 5 are used to set the data transfer mode Always set bit 6 is to OFF Setting Procedure Table 2 3 Setting Transmission Mode Full duplex
11. 35 5 Using the Module for j 0 j lt NUM j printf CH0 02x gt CH1 02x oce but LLL if rbuf 1 j l j printf Verify Error Mn verify data else printf n printe ew for j 0 j lt NUM j send CH1 to CHO while inp ADR 1 0x5 amp 0x20 transmitter empty outp ADR 1 0x0 j while inp ADR 0 0x5 amp Ox1 data ready rbuf 0 rent rent 0 0 unsigned char inp ADR 0 0x0 for j 0 j lt NUM j printt CH if rbuf 0 j 02x gt CHO 02x j rbuf 0 j l j printf Verify Error Mn verify data else printf n Sa aS ch A sm ec i cc LM ESOS End of file 36 CONTEC COM IPD FIT GY 5 Using the Module Enhanced Mode Flowchart Start Interrupt processing i a Read interrupt Initialize vector register Change interrupt vectors CHO LSR D5 Bit 1 Count number Yes of interrupts Send CHO data Read CHO data le Show an No interrupt count CHO IVR DO No Count number of interrupts Send CH1 data Read CH1 data I amp 3 Show an interrupt count CH1 LSR D5 Bit 0 Restore the interrupt vector EOI Show data End
12. FIT GY 4 Functions Refer to the following baud rate setting examples Baud rates other than those listed below can also be set if they produce a valid setting value in the equation described above Table 4 1 Baud Rate Generator Programming Table Clock 0 mode Clock 1 mode Clock 2 mode Clock 3 mode 1 8432MHz 3 6864MHz 7 3728MHz 14 7456MHz Output Baud Rate Setup Baud Rate Setup Baud Rate Setup Baud Rate Setup baud rate Generator error Generator error Generator error Generator error register register register register 57600 28800 23040 14400 7680 2304 1536 1047 134 5 857 150 300 600 1200 1800 2000 2400 3600 4800 7200 9600 14400 19200 28800 38400 57600 76800 115200 153600 230400 460800 921600 CONTEC COM IPD FIT GY 17 4 Functions Automatic RTS Control Functions This function applies to half duplex mode communications As half duplex means that the same line is used for sending and receiving the RTS and CTS signals are used to switch between sending and receiving Normally RTS is set by writing to the corresponding register bit but on this module it is controlled by hardware This reduces the load on the CPU Other Functions Bus Isolation The communication lines are electrically isolated from each other and from the PC This isolation prevents electrical disturbances from occurring between the Module and the external circuitry The
13. Initialize void unsigned int i j int dummy for i 0 i CH it outp ADR i 0x3 0x80 Line Control Register DLAB SET outp ADR i 0x0 BPS amp Oxff Divisor Latch Baud Rate SET outp ADR i 0x1 BPS gt gt 8 amp Oxff outp ADR i 0x3 0x0 Line Control Register DLAB RESET outp ADR i 0x3 0x7 Line Control Register f Bit D 1 Word Length 8 bit C BLE ADS zx 2 stop bit for j 0 j lt 10 j hardware wait dummy inp 0x2ef CONTEC 38 COM IPD FIT GY 5 Using the Module outp ADR i 0x4 0x3 MODEM Control Register DTR RTS dummy inp ADR i 0x5 Line Status Register Dummy Read dummy inp ADR i 0x0 Receiver Buffer Register Dummy Read dummy inp ADR i 0x2 Interrupt ID Register Dummy Read dummy inp ADR i 0x6 Modem Status Register Dummy Read outp ADR i 0x1 0x1 Interrupt Enable Register outp ADR 0 0x1f 0x80 Select Clock Mode fa change vector ecuso4 SS SS Se ee Se dece 4 void ChgVect void OrgVect dos getvect IntVector IRQ5 OrgVect dos getvect IntVector IRQ7 _disable dos setvect IntVector IRQ5 inthandler dos setvect IntVector IRQ7 inthandler outp 0x21 OrgMasterImr inp 0x21 amp PicMask IRQ5 amp PicMask IRQ7 outp 0x20 IsrClear IRQ5 ISR clear outp 0x20 IsrClear I
14. O RTS ORTS Indicates that the module is receiving serial data green Indicates that the module is transmitting serial data green CONTEC 12 COM 1PD FIT GY 3 Connecting to an External Device 3 Connecting to an External Device Interface Connector How to Connect an Interface Connector When connecting the Module to an external device you can use the supplied connector plug Lock nut UNC 4 40 inch screw Connector used DELC J9SAF 20L9 Female Connector type mfd by JAE equivalent Applicable m 17JE 23090 02 D8C Male Connector type mfd by DDK CN5 D9M Male Connector type mfd by CONTEC COM 1PD Figure 3 1 Connecting an interface connector and connectors that can be used Transmit Data TxD Transmit Data TxD4 J 9 9 RxD Receive Data Request to Send RTS 7 RxD Receive Data 8 F CTS Clear to Send 9 CTS Clear to Send Request to Send RTS Signal Ground SG CHO 9 pin D SUB Female Figure 3 2 Signal Layout on the Interface Connector N CAUTION For TxD RxD and RTS big numbered pins are and small numbered pins are For CTS big numbered pins are and small numbered pins are This is the opposite of the other signals but is not a misprint The external metal frame shell of the connector is insulated from the unit or not in contact wi
15. and COM4 respectively The interrupt levels will be IRQ5 for COM3 and IRQ7 for COM4 Enhanced Mode When the Module is being used in enhanced mode interrupt generation can be checked with the interrupt vector register IVR The Device ID switch is used to specify the interrupt line to be used When accepting an interrupt you can check by reading the IVR whether the interrupt has been generated within the interrupt service routine Before exiting from the executed interrupt service read the IVR again to check for any pending interrupt The XR16C2850 contains an internal register to enable itself for interrupts make them available or to check whether any interrupt has been generated For using the register refer to the data sheet for the XR16C2850 supplied by Exar Corporation For setting to use interrupts use the D2 bit in the modem control register MCR D2 bit of MCR Write 0 Enable when the power is turned on Write 1 Disable CONTEC 32 COM 1PD FIT GY Examples Following is a COM 1PD FIT GY sample program 5 Using the Module The sample program executes transmission and reception between two COM 1PD FIT GY units To connect RTS and CTS to an external device in full duplex mode use a connection cable as illustrated below Code S 5 Pin Code SG TxD TxD RxD RxD RTS RTS CTS CTS 0 w A ON HEP Na 9 1st set CHO Figur
16. at the time of enhanced mode as expansion ports for micro controller unit 2 Up to three units can be added as expansion ports for media converters RP COM FIT H RP COM FIDH AF FX DS540 COM2 Similar to other F amp elIT series products the system in the module itself incorporates a 35 mm DIN rail mounting mechanism as a standard item A connection to a controller module can be effected on a lateral stack basis in a unique configuration which permits a simple smart system configuration without the need for a backplane board 1 When using it as the expansion port for micro controller unit 2 Two units can be added at the time of compatible mode CONTEC COM IPD FIT GY 1 1 Before Using the Product Customer Support CONTEC provides the following support services for you to use CONTEC products more efficiently and comfortably Web Site Japanese _http www contec co jp English http www contec com Chinese http www contec com cn Latest product information CONTEC provides up to date information on products CONTEC also provides product manuals and various technical documents in the PDF Free download You can download updated driver software and differential files as well as sample programs available in several languages Note For product information Contact your retailer if you have any technical question about a CONTEC product or need its price delivery time or estimate information Limited O
17. to restart the OS 16 Once the operation is completed according to the instructions the installation will be completed When using more than one unit in Compatible Mode repeat 2 15 17 Set DeviceID according to the I O address and interrupt level registered in the system 18 Always make sure that CPU SB30 Series is turned off when connecting COM 1PD FIT GY to CPU SB30 Series 19 Turn on CPU SB30 Series to start the OS This completes the installation After the completion of the installation always check the resources using the How to Verify Resources Managed by OS section as a reference CONTEC COM IPD FIT GY 21 5 Using the Module Enhanced Mode Installation Procedure When it is used with Enhanced Mode COM driver of the bundled CD ROM is necessary Refer to COMDRV W32 Main e html being attached to the bundled CD ROM for the way of installing it A CAUTION When using it with Enhanced Mode in the Windows the product cannot be used with Device ID 4 or 5 To use the product with Enhanced Mode select another Device ID How to Verify Resources Managed by OS Always check the PC resources I O address and interrupt level assigned to the COM IPD FIT GY before actually using this product Use the following procedure to check the resources managed by the OS 1 Select System from Control Panel and click Hardware property sheet then open Device Manager 2 For Compatible mode double click
18. 0 Series Device CHO ID I O address h 0 Compatible COM3 03E8 03EF IRQ5 1 Compatible COM3 03E8 03EF Not Used 2 Compatible COM4 02E8 02EF IRQ7 3 Compatible COM4 02E8 02EF Not Used 4 Enhanced mode 01C0 01C7 IRQ5 5 Enhanced mode 01C0 01C7 IRQ7 6 Enhanced mode 02C0 02C7 IRQ5 T Enhanced mode 02C0 02C7 IRQ7 8 Enhanced mode 9800 9807 IRQ10 9 Enhanced mode 9820 9827 IRQ5 A Enhanced mode 9840 9847 IRQ7 B Enhanced mode 9860 9867 Not Used C Enhanced mode 0700 0707 IRQ10 D Enhanced mode 0720 0727 IRQ7 E Reserved Reserved Reserved F Reserved Reserved Reserved A CAUTION If the model label on the main unit reads Rev D Device ID No C or D can be used for that product Please use it excluding Device ID No 8 9 A B when using in the Windows environment CONTEC 20 COM 1PD FIT GY 5 Using the Module Operating under CPU SB30 Series When using the module under CONTEC s microcontroller unit CPU SB30 Series the OS must be set to recognize the I O address and interrupt level used by the COM 1PD FIT GY In CPU SB30 Series this is called hardware installation Use the following installation procedure Compatible Mode Installation Procedure 1 Do not connect COM 1PD FIT GY to CPU SB30 Series Turn on the CPU SB30 Series 2 Select Start from Control Panel and start the Add Hardware 3 Click Next gt in respo
19. 0x0 j while intcnt 1 lt 10 printf Interrupt CH0 02d CH1 02d n intcnt 0 intcnt 1 printf Mn for j 0 j lt NUM j send CH1 to CHO while inp ADR 1 0x5 amp 0x20 transmitter empty outp ADR 1 0x0 j while intcnt 0 lt 10 printf Interrupt CH0 02d CH1 02d n intcnt 0 intcnt 1 printf Nn ResVect restore vector for j 0 j lt NUM j printf CH0 02x gt CH1 02x Ma J CULI I if rbuf 1 j j printf Verify Error Mn verify data else printf n printf n for j 0 j lt NUM j printf CH1 02x gt CH0 02x j rbuf 0 j if rbuf 0 j j printf Verify Error Mn else printf Nin printf Nn printf Interrupt CH0 02d CH1 02d n intcnt 0 intcnt 1 a ees End of file CONTEC 40 COM 1PD FIT GY 6 System Reference Block Diagram Interface Connector CHO N ZN Receiver Driver UART XR16C2850 Compatible gt Control Circuit Device ID 1 Stack Connector Figure 6 1 Block Diagram 6 System Reference CONTEC COM IPD FIT GY 41 6 System Reference Equivalence Circuit t 9 O gt 1000 TxD RTS o TIT 4TkO i 6 2kQ e o lt
20. 1000 RxD CTS O o c4 ezxo a eR X TIT Figure 6 2 Circuitry Diagrams RS 422A 485 in Full Duplex i o l TxD RxD B l emo 6 2kO0 o 1002 t 6 240 IKO d Figure 6 3 Circuitry Diagrams RS 422A 485 in Half Duplex CONTEC 42 COM 1PD FIT GY 6 System Reference Specification Table 6 1 Specification Item Specification Number of channels solation solation voltage Transfer method Baud rates Data length 5 5 6 7 8 bits Parity check Controller chip 162850 or equivalent The module has 128 byte receive and 128 byte transmit FIFO buffers Connecting distance Dimension mm Weight module itsel Module installation One touch connection to 35mm DIN rails These items can be set by software 2 Data transmission at high speed may not be performed normally depending on the environment including the type of status of connected material of cable and environment 3 The table below lists an example of the relationship between baud rate and communication distance Communication Baud rate distance 300m 115 200bps 57 600bps 19 200bps 1200m 9 600bps Communication cable 28AWG double shielded cable twisted pairs used for each signal line 4 For the Driver Library API PAC W32 on the supplied CD ROM the range is 15 921 600 bps 5 When stacked in a media convert
21. 42 Niere IO 43 Physical Dimensions eR RR LARA 44 CONTEC iv COM 1PD FIT GY 1 Before Using the Product 1 Before Using the Product This chapter provides information you should know before using the product About the Module The COM 1PD FIT GY performs serial communication with an external device in compliance with RS 422A 485 capable of serving as COM3 or COMA of an F amp elT series microcontroller unit The module can also serve as an expansion COM port for a media converter RP COM FIT H RP COM FIT H AF or FX DS540 COM2 Please read this manual carefully to create application programs and configure the system such as setting the switches and connecting it to external devices Features RS 422A 485 serial communication ports The communication lines are electrically isolated from the module High speed communication is supported at up to 921 600bps 115 200bps in compatible mode A baud rate can be set by software The module has 128 byte FIFO buffers for transmit and receive Driver software is supplied to allow the serial ports to be used as standard Windows or Linux COM ports 1 The data transfer mode full duplex or half duplex can be set by a switch The board includes a 100Q terminating resistor required for multi drop party line connections The resistor can be inserted into the signal line by a switch Surge protection is provided for each RS 422A 485 signal line Up to three units can be added
22. C Part 15 Class A Notice and VCCI Class A This product has acquired the above mentioned standard However a sufficient margin may not be secured for the standard In this case use a ferrite core SEIWA E04SR301334 or a compatible product for both ends of the COM cable When attaching the ferrite core coil it around once near the connector while leaving it open and then close it If a mouse is connected to your microcontroller as a rider to the EMC Directive for a Class A product a ferrite core SEIWA E04SR301334 or a compatible product must be used for the mouse cable When attaching the ferrite core coil it around twice near the connector while leaving it open and then close it FCC PART 15 Class A Notice NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference at his own expense WARNING TO USER Change or modifications not expressly approved the manufacturer can void the user s authority to operate this equipmen
23. Counter 1h Feature Control Register FCTR Rx Tx SCPAD Trig Trig RS485 IrRx RTS RTS Mode Swap Bit 1 Bit 0 Auto Inv Delay Delay control Bit 1 Bit 0 2h Enhanced Feature Register EFR Special Cont 3 Cont 2 Cont 1 Cont 0 Char Tx Rx Tx Rx Tx Rx Tx Rx select Control Control Control Control 4h Xon 1 Word 5h Xon 2 Word 6h Xoff 1 Word 7h Xoff 2 Word Figure 5 8 Output port Enhanced Register Output port 4 Interrupt Vector Registers Starting I O D7 D6 D5 D4 D3 D2 DI DO address 1Fh Interrupt Vector Registers Clock Clock Reserved selection selection Bit 1 Bit 0 Figure 5 9 Output port Interrupt Vector Registers CONTEC 30 COM IPD FIT GY 5 Using the Module Interrupt Vector Registers Output t m D7 D6 D2 DI DO Starting I O address 1Fh Reserved LL Clock selection see Setting a Baud Rate 00 Clock 0 mode 1 8432MHz 01 Clock 1 mode 3 6864MHz 10 Clock 2 mode 7 3728MHz 11 Clock 3 mode 14 7456MHz Fixed at 0 Input port D7 D6 D1 DO Starting O address Reserved ees CHO interrupt see Using an Interrupt 0 Interrupt detected 1 No interrupts Fixed at 0 Figure 5 10 Interrupt Vector Registers CONTEC COM IPD FIT GY 31 5 Using the Module Using an Interrupt Compatible Mode When the Module is operated in the compatible mode channel CHO is assigned to standard I O addresses COM3
24. F amp eIT Series Isolated RS 422A 485 Ich Communication Module COM 1PD FIT GY User s Manual CONTEC CO LTD Check Your Package Thank you for purchasing the CONTEC product The product consists of the items listed below Check with the following list that your package is complete If you discover damaged or missing items contact your retailer Product Configuration List Module COM 1PD FIT GY 1 First step guide 1 CD ROM F amp elT Series Setup Disk 1 1 The CD ROM contains various software and User s Manual this manual CD ROM Module First step guide F amp eIT Series Setup Disk CONTEC COM IPD FIT GY i Copyright Copyright 2003 CONTEC CO LTD ALL RIGHTS RESERVED No part of this document may be copied or reproduced in any form by any means without prior written consent of CONTEC CO LTD CONTEC CO LTD makes no commitment to update or keep current the information contained in this document The information in this document is subject to change without notice All relevant issues have been considered in the preparation of this document Should you notice an omission or any questionable item in this document please feel free to notify CONTEC CO LTD Regardless of the foregoing statement CONTEC assumes no responsibility for any errors that may appear in this document or for results obtained by the user as a result of using this product Trademarks F amp elT i
25. Module can therefore be used comfortably even when line noise can be easily generated to seemingly cause the Module to malfunction or break Surge Protection As surge protection is provided on all RS 422A 485 control lines you can safely use the modules in environments where you are concerned about surges causing incorrect operation or damage to the PC CONTEC 18 COM 1PD FIT GY 5 Using the Module 5 Using the Module Compatible and Enhanced Modes The COM 1PD FIT GY can operate in two modes the compatible mode in which the COM 1PD FIT GY when connected to CONTEC s microcontroller unit acts as a standard serial port and the enhanced mode in which the COM 1PD FIT GY operates under CONTEC s unique control method Before building a system using the COM 1PD FIT GY a working understanding of the features of these modes may be in order N CAUTION To use four or more channels of COM in the Windows environment select the enhanced mode and then use the COM DRV W32 driver Ex Device ID No 04h 07h 0Ch The I O address and IRQ that can be configured differs according to the connection source microcontroller For the CPU SBxx Series refer to Table 5 1 For the BX 300 Series refer to Table 5 2 Compatible Mode The COM 1PD FIT GY can use two channels as standard serial ports COM 1PD FIT GY can be assigned to COM3 or COM4 The module uses the I O addresses assigned for a standard serial port As the module is
26. RQ7 ISR clear _enable enable RSS restore vector Sas SETS TATA i void ResVect void _disable disable outp 0x21 OrgMasterImr _dos_setvect IntVector IRQ5 OrgVect restore orgvect _dos_setvect IntVector IRQ7 OrgVect restore orgvect _enable enable interrupt handler eee ide er a ee es void _interrupt far inthandler void unsigned char sts0 stsl _enable enable do sts0 unsigned char inp ADR 0 0x1f Int Vector Register if sts0 amp 0x1 CHO status while inp ADR 0 0x05 amp 0x1 rbuf 0 intcnt 0 unsigned char inp ADR 0 0x0 intent 0 count times of an interrupt while sts0 amp Oxf do stsl unsigned char inp ADR 1 0x1f Int Vector Register if stsl amp 0x1 CHO status while inp ADR 1 0x05 amp 0x1 rbuf 1 intcnt 1 unsigned char inp ADR 1 0x0 intent 1 count times of an interrupt while stsl amp Oxf CONTEC COM IPD FIT GY 39 5 Using the Module _disable disable outp 0x20 0x20 EOI asta main Ss ae Xf void main void unsigned int i j Initialize initialize ChgVect change vector for j 0 j lt NUM j send CHO to CH1 while inp ADR 0 0x5 amp 0x20 transmitter empty outp ADR 0
27. a Buffers The module has a separate 128 byte send and 128 byte receive buffer The buffers operate as FIFO buffers and help reduce the load on the CPU for high speed communications or system operation The FIFO trigger size is a data buffer size that determines the timing of generating a hardware interrupt Increasing the FIFO trigger size decreases the number of times hardware interrupts occur for data transmission and reception thereby reducing the load on the CPU However this delays the timing of transmitting data to the remote device and the timing of notifying an application of data reception because actual transmission and reception take place after a certain amount of data has been collected In contrast decreasing the FIFO trigger size or disabling FIFO memory shortens the timing of data transmission and reception but may increase the load on the CPU or miss some receiving data Since the FIFO trigger size is variable adjusting it depending on the system results in optimum performance CONTEC COM IPD FIT GY 15 4 Functions Setting the Baud Rate The output baud rate can be set by setting the appropriate value to the Baud Rate Generator register The available setting range depends on which clock mode is used Clock 3 mode 15 921 600bps Clock 2 mode 8 460 800bps Clock 1 mode 4 230 400bps Clock 0 mode 2 115 200bps However some baud rate values do not have a corresponding Baud Rate Generator register s
28. anced mode starting I O address 1Fh is used as an interrupt vector register T O Ports Starting I O D7 D6 D5 D4 D3 D2 DI DO address 0h 1h 2h 3h 4h 5h 6h 7h 1Fh Interrupt vector register Figure 5 1 I O Ports A CAUTION Each port must be accessed in bytes to conform to device specifications Channel 0 register Non byte access to any port is not allowed such as word access or doubleword access CONTEC 26 COM 1PD FIT GY 5 Using the Module Details on I O Ports and Registers The XR16C2850 s internal registers are port mapped differently depending on the value set in the Line Control Register LCR The General Registers are enabled at startup or with LCR Bit 7 0 and LCR other than OxBFh The Baud Rate Registers are enabled with LCR Bit 7 1 The Enhanced Registers are enabled with LCR OxBFh Input port 1 General Registers Starting I O D7 D6 D5 D4 D3 D2 DI DO address 0h Receive Holding Register RHR 1h Interrupt Enable Register IER Xoff MODEM Receive Transmit Receive Interrupt Interrupt Interrupt Status Line Holding Holding 2 Interrupt Status Register Register Interrupt 2h Interrupt Status Register ISR FIFOs FIFOs RTS Xoff Int Int Int Enable Enable CTS Priority Priority Priority Bit 2 Bit 1 Bit 0 3h Line Control Register LCR Divisor Set Set Even Parity Stop Latch Break Parity Parity Enable Bits Enable 4h Modem Control Re
29. densation As this product contains precision electronic components do not use or store in environments subject to shock or vibration Do not use or store the product near equipment generating a strong magnetic field or radio waves f you notice any strange odor or overheating please unplug the power cord immediately In the event of an abnormal condition or malfunction please consult the dealer from whom the equipment was purchased To avoid electric shock please do not touch the system with a wet hand Do not open the module casing CONTEC will disclaim any responsibility for equipment whose casing has been opened To prevent damage please do not subject the module to impact or bend it To prevent contact malfunction please do not touch the metallic pins on the external module connector The module contains switches that need to be properly set Before using the module please check its switch settings To avoid malfunction please do not change the module switch settings in an unauthorized manner Do not operate the device module when the power for the Controller Module is on To avoid malfunction please be sure to turn off the power for the Controller Module When disposing of the product follow the disposal procedures stipulated under the relevant laws and municipal ordinances CONTEC 4 COM 1PD FIT GY 1 Before Using the Product Regarding EMC Instruction Class A Notice and FC
30. e 5 11 Cable Connection Diagram CONTEC COM IPD FIT GY N 0 w a 0 me SG RxD RxD TxD TxD CTS CTS RTS RTS 2nd set CH1 33 5 Using the Module Compatible Mode Flowchart Start a Set Baud Rate Generator Set transmission Send CHO data format CH1 LSR DO E Bit 1 Yes Set modem contro output Receive CH1 data Line status register E dummy READS Final data WAIT time RECEIVE register ummy READ Interrupt ID register ummy READ Modem status register ummy READ No Final channel Yes 1 Receive CHO data Show data CONTEC COM 1PD FIT GY 34 5 Using the Module Sample Program Sample program 1 UNITO lt gt UNITI Loop Test UNIT No 0 1 DEVICE ID 0 2 Mode Compatible Mode Channel 0 03E8H COM3 02E8H COM4 Baud Rate 115 200 bps Interrupt N A n _____m_m_m_m_m__ _ _ _ m_ _ m _1l1l1nl _ _ l__l_l_l_ l_Lz include lt stdio h gt include lt conio h gt Jj xeu Constant define CH 2 no of channels define NUM 10 data of total number define BPS 1 baud rate unsigned char rbuf CH NUM
31. er the setting s depend on the media converter For detailed specifications refer to the media converter s instruction manual N CAUTION When connecting the module to a controller module the internal power consumption should be taken into account If the total current exceeds the capacity of the power supply unit the integrity of the operation cannot be guaranteed For further details please see the Controller Module manual CONTEC COM IPD FIT GY 43 6 System Reference Table 6 2 Installation Environment Requirements Parameter Requirement description Operating temperature 0 50 C Storage temperature 10 60 C Humidity 10 90 No condensation Floating dust particles Not to be excessive Corrosive gases None Physical Dimensions 1 2 03 TI D UU DP 14 0 315 114 0 III C a Gi oc Ed C 1 E 1 s ggg Son co d 35 0 ULT cana TO eo DI C a It ao 3 CD PRIN cI P co 45 0 rz nz Comm ai ED q 3 5 25 2 64 7 4 0 Jo 3
32. etting If the result of substituting the baud rate into the equation below is an integer then that baud rate can be set If the result contains a fractional part the baud rate cannot be set Clock 3 mode 921600 Desired baud rate Division register setting value Ex 921600 9600bps 96 As the result is an integer this baud rate can be set 921600 128000bps 7 2 As the result contains a fractional part this baud rate cannot be set Clock 2 mode 460800 Desired baud rate Division register setting value Ex 460800 9600bps 48 As the result is an integer this baud rate can be set 460800 128000bps 3 6 As the result contains a fractional part this baud rate cannot be set Clock 1 mode 230400 Desired baud rate Division register setting value Ex 230400 9600bps 24 As the result is an integer this baud rate can be set 230400 128000bps 1 8 As the result contains a fractional part this baud rate cannot be set Clock 0 mode 115200 Desired baud rate Division register setting value Ex 115200 9600bps 12 As the result is an integer this baud rate can be set 115200 76800bps 1 5 As the result contains a fractional part this baud rate cannot be set A CAUTION See Chapter 5 Interrupt Vector Registers for selecting the clock frequency 1 8432 3 6864 7 3728 or 14 7456 MHz For use in compatible mode clock 0 1 8432 MHz is used as a fixed setting CONTEC 16 COM 1PD
33. gister MCR Clock Xon OP2 and Out 1 RTS DTR Prescaler Any INT O INT Select 2 Enable Enable 2 LINT Disable 1 5h Line Status Register LSR Error TSR Empty Interrupt Error Error Error Data Empty Ready 6h Modem Status Register MSR CD RI DSR CTS 7h Scratch Pad Register SPR 7h FIFO Level Counter FLVL 3 1 For details see the Using an Interrupt section 2 These bits are enabled with EFR Bit 4 1 3 These registers are enabled with FCTR Bit 6 1 Figure 5 2 Input port General Registers CONTEC COM IPD FIT GY 27 5 Using the Module Input port 2 Baud Rate Registers Starting I O D7 D6 D5 D4 D3 D2 DI DO address 0h LSB of Divisor Latch DLL 1h MSB of Divisor Latch DLM Figure 5 3 Input port Baud Rate Registers Input port 3 Enhanced Registers Starting I O D7 D6 D5 D4 D3 D2 DI DO address 0h FIFO Level Counter Trig FC Trig FC Trig FC Trig FC Trig FC Trig FC Trig FC Trig FC 1h Feature Control Register FCTR Rx Tx SCPAD Trig Trig RS485 IrRx RTS RTS Mode Swap Bit 1 Bit 0 Auto Inv Delay Delay control Bit 1 Bit 0 2h Enhanced Feature Register EFR Special Cont 3 Cont 2 Cont 1 Cont 0 Char Tx Rx Tx Rx Tx Rx Tx Rx select Control Control Control Control 4h Xon 1 Word 5h Xon 2 Word 6h Xoff 1 Word 7h Xoff 2 Word Figure 5 4 Input port Enhanced Registers Input port 4 Interrupt vector register Starting I O D7 D6 D5 D4 D3 D2 D1 DO address
34. handled as the standard serial port it can run under other driver software that can operate standard serial ports Although OS dependent the I O addresses in the COM 1PD FIT GY can be recognized by the system and used as standard ports You can use these addressed by checking the system settings Enhanced Mode The enhanced mode operates the COM 1PD FIT GY by using CONTEC s unique control method For I O addresses CONTEC designated addresses must be used When the COM DRV W32 driver is used it can be used in the same way as a standard serial port N CAUTION When using it in the OS other than Windows user needs to create the device driver for enhanced mode CONTEC COM IPD FIT GY 19 5 Using the Module Table 5 1 I O Address Device CHO ID IO address h 0 Compatible COM3 03E8 03EF IRQ5 1 Compatible COM3 03E8 03EF Not Used 2 Compatible COM4 02E8 02EF IRQ7 3 Compatible COM4 02E8 02EF Not Used 4 Enhanced mode 01A0 01A7 IRQ5 5 Enhanced mode 01A0 01A7 IRQ7 6 Enhanced mode 02A0 02A7 IRQ5 7 Enhanced mode 02A0 02A7 IRQ7 8 Enhanced mode 9800 9807 IRQ9 9 Enhanced mode 9820 9827 IRQ5 A Enhanced mode 9840 9847 IRQ7 B Enhanced mode 9860 9867 Not Used C Enhanced mode 0700 0707 IRQ9 D Enhanced mode 0720 0727 IRQ7 E Reserved Reserved Reserved F Reserved Reserved Reserved Table 5 2 I O Address When connected to the BX 30
35. ne Year Warranty CONTEC products are warranted by CONTEC CO LTD to be free from defects in material and workmanship for up to one year from the date of purchase by the original purchaser Repair will be free of charge only when this device is returned freight prepaid with a copy of the original invoice and a Return Merchandise Authorization to the distributor or the CONTEC group office from which it was purchased This warranty is not applicable for scratches or normal wear but only for the electronic circuitry and original modules The warranty is not applicable if the device has been tampered with or damaged through abuse mistreatment neglect or unreasonable use or if the original invoice is not included in which case repairs will be considered beyond the warranty policy How to Obtain Service For replacement or repair return the device freight prepaid with a copy of the original invoice Please obtain a Return Merchandise Authorization Number RMA from the CONTEC group office where you purchased before returning any product No product will be accepted by CONTEC group without the RMA number Liability The obligation of the warrantor is solely to repair or replace the product In no event will the warrantor be liable for any incidental or consequential damages due to such defect or consequences that arise from inexperienced usage misuse or malfunction of this device CONTEC 2 COM 1PD FIT GY 1 Before Using the Produc
36. nse to Welcome to the Add Hardware Wizard in the Add Hardware Wizard 4 Select the Yes from the Has the hardware already been connected with the computer screen and click Next 5 The next select Add a New Device in response to Choose a Hardware Task and click Next 6 Select No select from a list Advanced in response to Do you want Windows to search for your new hardware and click Next 7 Select the Ports COM amp LPT folder from the Hardware types screen 8 Select Communications Port from Standard Types and press Next 9 On the Start Hardware Installation screen press Next 10 Code 34 occurs in the Completing the Add Hardware Wizard screen as resources are not assigned properly To assign resources appropriately select View or change resources for this hardware Advanced 11 On the Properties screen of Add New Hardware Wizard press the Set Configuration Manually to specify an I O address and interrupt level 12 Change Base Configuration and select an available I O address Then press IRQ to specify IRQ Make sure that Conflict information is set to No devices are conflicting 13 Make sure that Conflicting device list is set to No conflicts Set the I O address and interrupt level in the same way as for DeviceID For details see Table 5 1 14 Press Complete to end the wizard 15 The message Do you want to restart now will appear Select Yes
37. on the Ports COM amp LPT folder For Enhanced mode double click on the Multi function adapters folder 3 Double click on the CONTEC CO LTD COM IPD FIT GY or COM folder to display the properties screen 4 Select Resources Check the resource items and settings and look for any conflicts 5 If changing an I O address change the Basic configuration from the Setting based on To change an interrupt level click on Change setting C After checking the resources check again that the interrupt level value on the COM IPD FIT GY match the settings in the OS CONTEC 22 COM 1PD FIT GY 5 Using the Module Checking Operations with the Diagnosis Program method Use the Serial diagnosis program from the supplied CD ROM API SBP W32 to check that the module and driver software work normally thereby you can confirm that they have been set up correctly What is the Diagnosis Program These programs perform some simple checks on the board operation Two programs are provided Terminal program CTstCom exe Data entered from the keyboard is sent directly from the port The function of the program is equivalent to the Hyper Terminal program provided with Windows Serial Communications Diagnostic Program CommChk exe Performs actual communications and indicates whether the results are correct or not error The following describes the procedure for testing using the serial communications diagnostic program
38. or gt Device ID 9 sis Transmission mode terminators Interface connector COM 1PD Figure 2 1 Names of module components Setting a Device ID Depending on the specific Device ID that is set the COM 1PD FIT GY can be switched over between the compatible mode and the enhanced mode Table 2 1 shows the relationship between Device IDs and the modes However use Table 2 2 when connected to the BX 300 Series For a description of the compatible and enhanced modes see Chapter 4 Using the Module The factory setting is 0 in which the COM 1PD FIT GY can be used as a COM3 standard port N CAUTION The setup method in this document assumes the combination with a microcontroller For the combination with a media converter read the manual for the media converter carefully for setup CONTEC COM IPD FIT GY 2 Module Nomenclature and Settings Setup Method A device ID can be set by turning the rotary switch on the device face To set a device ID turn the switch knob Factory settings Device ID 0 Figure 2 2 Setting a Device ID A CAUTION If the model label on the main unit reads Rev D Device ID No C or D can be used for that product Please use it excluding Device ID No 8 9 A B when using in the Windows environment Table 2 1 I O Address A CHO DeviceID I O address h Interrupt Mode 0
39. s a registered trademark or trademark of CONTEC CO LTD Other company and product names that are referred to in this manual are generally trademarks or registered trade trademark CONTEC ii COM 1PD FIT GY Table of Contents Check Your Packages rst RO TERRIER EAS EEYFII EAR i leonum O ii Trademarks jane aac aaa aa A ii Table of Contents ite tre TATOO ii 1 BEFORE USING THE PRODUCT 1 About the Module aaa alate 1 Inu RINO PRO SI PO SORIA OOO SOTTO A SIONI O PIRAS RIO ROSA OS O ORI ATE 1 Girona eic LAN RITIRATA 2 Web Site ay Limited On Year Warranty Jets et I ette eara ei 2 HOW to Obtain SErvice RR 2 Tita by sc NI EI 2 Safety Precautions E 3 Safety Information epe RE VO EA NIE RARI ITA REA neonate 3 Handling Pre cautiOns eee ER RS NO SER IE NER EIER NENNEN ii 4 Inspection LOLA RC m C Disposar 6 2 MODULE NOMENCLATURE AND SETTINGS 7 Nomenclature of Module Components i 7 Setting a Device ID siria 7 SII RR TRE AT 8 Setting Transmission Mode e Rete pete eet epe deren pec diner te dean 10 Setting of Terminator cios sed RH ehe ree ae ide eee e Oe Fan OR Ea 11 EED IndicatoP cn E T 12 3 CONNECTING TO AN EXTERNAL DEVICE 13 Interface Connector sene i RR OR EEE E T ERI REIN E EE E 13 How to Connect an Interface Connector
40. t CONTEC COM IPD FIT GY 5 1 Before Using the Product Environment Use this product in the following environment If used in an unauthorized environment the module may overheat malfunction or cause a failure Operating temperature 0 50 C Humidity 10 90 RH No condensation Corrosive gases None Floating dust particles Not to be excessive Inspection Inspect the product periodically as follows to use it safely The ventilation slits are not covered and neither dust nor alien substance is attached to the ventilation slits TTD IDA IL When storing this product keep it in its original packing form 1 Put the module in the storage bag 2 Wrap it in the packing material then put it in the box 3 Store the package at room temperature at a place free from direct sunlight moisture shock vibration magnetism and static electricity Disposal When disposing of the product follow the disposal procedures stipulated under the relevant laws and municipal ordinances CONTEC 6 COM IPD FIT GY 2 Module Nomenclature and Settings 2 Module Nomenclature and Settings Nomenclature of Module Components Figure 2 1 shows the names of module components In the figure the indicated switch settings represent factory settings LED Indicat
41. t Safety Precautions Understand the following definitions and precautions to use the product safely Safety Information This document provides safety information using the following symbols to prevent accidents resulting in injury or death and the destruction of equipment and resources Understand the meanings of these labels to operate the equipment safely DANGER DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury A CAUTION CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury or in property damage CONTEC COM IPD FIT GY 3 1 Before Using the Product Handling Precautions CAUTION Take the following precautions when handling this module Do not modify the module CONTEC will bear no responsibility for any problems etc resulting from modifying this module Do not use or store the equipment in a hot or cold place or in a place that is subject to severe temperature changes Operating temperature range 0 to 50 C Do not use or store the equipment in a place subject to direct sunlight or near a heating device such as a stove Do not use or store the equipment in a dusty or humid place Operating humidity range 10 to 90 RH no con
42. th any part of the unit When grounding is required for example as data transfer remains unstable ground the remote device to the earth 9 CONTEC COM IPD FIT GY 13 3 Connecting to an External Device Types of Cable and Example Connections The figures below show examples of how to connect the cable for the module The RS 422A 485 interface works based on a differential signal whereby the signal is carried by the potential difference between two lines and Using twisted pair cable is recommended to improve resistance to noise TxD A A TxD ro N omi RxD A A RxD L pen NAT ne A RTS n A RIS 1 Xes evs 7 T CTS n A CTS T CTS J CTS T LU Iw SG sc na ys Figure 3 5 Example Connection in Half Duplex A CAUTION If connecting between external devices and this board with faulty wiring it will become the cause of failure CONTEC 14 COM IPD FIT GY 4 Functions 4 Functions This section describes the functions of the module Communication Function Serial Data Transmission Sends and receives data in accordance with the RS 422A 485 standard The baud rate can be set independently in the range 2 921 600bps by software RS 422A 485 Control Lines The module include the RTS RTS CTS and CTS control lines The lines can be controlled or monitored by software from the application Send and Receive Dat
Download Pdf Manuals
Related Search