MIU-100 Modem Interface Unit Datasheet / Manual
Contents
1. Iepsq E Using HyperTerminal connect to the modem as described earlier Type AT amp FO and enter This will reset the modem to factory defaults Press the reset button the modem From HyperTerminal enter the following commands press enter after each command a AT amp KO response OK Disables flow control b AT amp DO response OK Modem ignores DTR c ATSO 2 response OK Auto Answer on ring 2 d AT MS V90 1 9600 9600 9600 56000 response OK Establishes preferred connection type and data rates ATEO response OK Disables local command echo ATQI no response will be seen Disables modem results responses g AT amp WO no response will be seen Saves settings to NV memory profile 0 h AT amp V response will be the parameters listing Lists stored parameters mo The following commands can be used to query the configuration parameters not listed by the AT amp V command AT MS and enter The result will be the current modem connection type and data rate information This parameter is not listed when executing the AT amp V command The proper response should be MS V90 1 9600 9600 9600 56000 The key parameters above are E0 Q1 amp DO0 amp KO S00 002 The active profile should match stored profile 0 RS485 network USING BIASING AND TERMINATION TO IMPROVE COMMUNICATIONS The normal default configuration disables the biasing and termination for the RS485 communications hardware Generally these jumpers ca2. data then a delay then a retry etc until the connection is terminated If a modem will not answer you can go to the RS232 programming mode and enter the command ATQO and ATE this will enable the response codes and echo Now when an incoming call is seen the modem should send out a RING message to HyperTerminal If the ring message is not seen then check the phone line connections and phone line functionality If the ring message is seen but the modem does not answer it is usually due to improper RS485 wiring grounding or poor system ground Also with the ATQO and ATEI settings with jumper J8 in RS232 mode you can use HyperTerminal to answer the phone manually and see what connection message if any is received When the ring message appears in HyperTerminal and the modem does not auto answer enter the command ATA to answer the call manually Once the modem negotiates a connection you should see a connect message Noisy phone lines may cause the dial in attempt to fail if the modem cannot negotiate the baud rate used by the slave device In this case a slower baud rate can be selected for MODBUS 9600 4800 300 To change the Baud rate you must first configure the slave baud to the appropriate rate Next using HyperTerminal enter a MS command that will allow the modem to connect at the slower rate For 9600 Baud enter MS V90 1 9600 9600 9600 56000 response OK For a slower rate replace the 9600 entries with the new baud rat
3. b SYSTEMS A MILTON ROY MIU 100 Modem Interface Unit Datasheet Manual Guide 120 Volt AC 9600 Baud Modem RS 485 Field Connection RS 232 Programming Port Intrinsically Safe and Electrically Isolated Output Page 1 10 31 2007 YSTEMS MIU 100 Modem Interface Unit Datasheet Manual Guide Index Entrod Uc LOT PE ui ete iquat natia us M ub EA 3 TBE PSE AUT sopra ropen aae X 3 System SODOBEOS ei ru niceness ans eie aaa aE EEE S Pac ES EE Ea aaen 4 System Specifications odeascabdti satu eae ek ee cites oe ce srias aeaa Seier aiio aE 5 Physical Triste Ath erona E ER E EE 6 lS orans os E EE 6 Gin M 6 lE 6 Telephone MEL RA 6 Telephone DA ood ated M ep ER evi Rte Rica etie wane wees 7 o QM 7 OSE e coercere pes petes Corre eoi io es Duae a T tenete cuu basi tao estne pisa tete Dn eats 7 Operationen Rem pendence seen E E N E O e MM CN 8 5i e E E E arr cn ee Senn mente ene eer etree Te 8 PV TMG Sas et 8 Modemi C artigiani res d eec sehen ina ivenseleboenasucedeayaseecantalGeseaselebextssdeaceasauaeantantinetates 8 TircublesbioEIDE assai euis syni iiaae to i E a E Du E t opu Doi G deu tue 9 Nemo abre eei evum Dd nup tM bun DES EUN aM apu 9 Status LED C M HH 9 Power Connection TB M NE 9 RS433 Conne
4. by J4 Left J4 position on Right J4 position off This is the default Network Bias is controlled by J3 and J5 Down J3 and J5 position on Up J3 and J5 position off This is the default Bias voltage is isolated RS485 Baud Rate is controlled by SW2 This adjustment controls the turn around delay for RS485 driver Only one dip switch should be on at a time For use with Sentry4 software this must be 9600 This is the default RS232 Connection P3 Connection may be made with a strait through male to female RS232 cable This connection is used to program the modem module Page 9 10 31 2007 ll SYSTEMS 7 MILTON ROY MIU 100 Modem Interface Unit Datasheet Manual Guide PC Failure to establish a connection Make sure the PC modem used by Sentry4 is configured with flow control disabled Configure the modem to limit the maximum connection baud rate to 9600 V 32b This is usually necessary if a connection can be readily established when Sentry4 software initiates the call but a connection cannot be established when the N 300 controller initiates a call alarm callout NOTE Consult the manual for your PC modem used by Sentry4 for information on configuring the modem settings A modem initialization string can be entered into Sentry4 modem configuration file Modemlnit txt using a text editor This file is located under the Sentry4 directory Make sure that the Sentry4 software is configured with the p
5. ction e H M 9 RS232 Connection P3 asusta mes ni i Mm EsbpehuMta cru ma P adsense DER eni ESSES 9 roy easter cueeanen 10 Pathe to establish 4 GOnnpel OT eod pu pM RR a pli P epis udi td ees 10 Modem Mod le e D n 10 Modem Programming ENERO o SOME 10 RSBI NEtWOTK RE EEEE ES 11 Page 2 10 3 1 2007 ll SYSTEMS 7 MILTON ROY MIU 100 Modem Interface Unit Datasheet Manual Guide Introduction Congratulations on your purchase of the MIU 100 modem package Before installation insure that all of the components are present If you have questions about installation operation contact your YZ Sales Representative or contact YZ Customer Service at 281 362 6500 Theory of Operation The MIU 100 is a low powered industrial modem package for use with the N 300 NJEX odorant injection systems communication capabilities The MIU 100 package connects to a standard Public Switched Telephone Network and provides an intrinsically safe RS 485 communications channel to an N 300 controller The MIU 100 must be mounted in a Safe Area See drawings in this manual for installation examples The MIU 100 is designed to operate under very low power situations and is available with a 120 240 V AC power supply YZ Systems Milton Roy represents and warrants that for a period of 3 years from receipt of the product 1 the pr
6. e Set the Baud rate selection switch SW2 to the appropriate Baud rate The RS485 port of the slave can be tested using a PC and RS232 485 converter B amp B Electronics makes a USB to RS485 converter that is easy to use The converter plugs directly into a USB port on a PC and wire directly into the slave RS485 terminal block connections You can then use the host software to directly connect to the slave to verify proper operation of the host and slave Page 12 10 31 2007 qq SYSTEMS 7 MILTON ROY
7. n be left in the factory default state but can be useful in improving the communications reliability in noisy environments or when long cable lengths are encountered max 4000ft Enabling the Biasing can help keep the 485 signals referenced to the power and ground of the slave unit If other attached equipment on the 485 network also support biasing only enable biasing in one device Normally only the modem should provide biasing in this situation Termination places a 120ohm resistor across the and 485 signals When enabling termination both ends of the network should be terminated at the furthest points So if multiple devices were on the 485 network only the modem and device at the other end of the cabling would have termination enabled Network connections should run from one device to the next USING HYPERTERMINAL FOR TROUBLESHOOTING HyperTerminal can also be used to monitor the data traffic between the controller and PC while in RS485 normal mode by leaving HyperTerminal running and the RS232 cable connected Make sure jumper J8 is in the RS485 qq Page 11 10 31 2007 SYSTEMS 7 MILTON ROY MIU 100 Modem Interface Unit Datasheet Manual Guide mode The data seen will be in ASCII format and not necessarily useful but the amount of data and any delays or retries can be distinguished If data is being sent to the controller but nothing sent from the controller as a response you will see only a few characters of
8. oduct will be free from defects in materials and workmanship and 2 the product will perform substantially in accordance with product manuals literature or documentation Any written or oral information or advice given by YZ representatives agents or employees will in no way increase the scope of this warranty If the product fails to comply with the warranty set forth herein Y Z s entire liability and the customer s exclusive remedy will be replacement of the product s or at Y Z s option YZ s reasonable effortto make the product meet the warranty set forth herein YZ disclaims all other warranties either expressed or implied including but not limited to implied warranties or merchantability and fitness for a particular purpose with respectto the product This limited warranty gives you specific legal rights You may have others which vary from state to state These remedies are not available outside of the United States and Canada In no event shall YZ or its suppliers be liable for any damages whatsoever including without limitation damages for loss of profits business interruption loss of information or other pecuniary loss arising out of the use of or inability to use the product even if YZ has been advised of the possibility of such damages Information contained in this document is subjectto change without notice and does not represent a commitment on the part of YZ Systems Milton Roy All prices quoted are in U S dollars F O B The W
9. og line 3 75kVac Digital line 10kV V 34 V 32bis V 22bis V 22 Bell 212A and Bell 103 14400 9600 4800 2400 1200 300 bps 57600 38400 19200 MNP 2 3 5 amp 10 V 42 V 42bis Page 5 10 31 2007 MIU 100 Modem Interface Unit Datasheet Manual Guide Physical Installation Mounting The MIU 100 Panel is designed to mount to a 2 vertical pipe This pipe is not a part of the MIU 100 system and is to be provided and installed by the customer at the site in an appropriate location classified as a Safe Area The MIU 100 panel should be attached to the 2 pole utilizing the U Bolts and mounting clamps that are provided as a part of the MIU 100 system Ground Connect the ground lug on the bottom of the MPS MIU Power Supply to an earthed grounding rod Resistance from the grounding lug to the grounding rod should be less than 1 ohm Power Connect the AC Power to the cable provided White is neutral Black is hot Green is supply ground Ground Page 6 10 31 2007 LL systems MITON ROY MIU 100 Modem Interface Unit Datasheet Manual Guide Telephone Line A phone line cable should be installed into the left most Myers hub on bottom of the modem enclosure and connected to TB2 terminals 1 and 2 TB2 1 should be connected to the phone line green wire which is designated as the tip connection and TB2 2 should be connected to the phone line red wire which is designa
10. oodlands Texas NJEX is a trademark of YZ Systems Milton Roy All other product names and or registered trademarks are the property of their respective holders YZ support services are subjectto YZ s then current prices terms and conditions which are subjectto change without notice All prices and specifications if published are subjectto change without notice Page 3 10 31 2007 MIU 100 Modem Interface Unit Datasheet Manual Guide System Standards All Telenetics dial up modems are designed to meet the following Standards USA FCC Part 15 Class I and Part 68 Canada DCO Standards CS 01 CS 02 and CS 03 CANADIAN DEPARTMENT OF COMMUNICATIONS NOTICE NOTICE The Canadian Department of Communications DOC label identifies certified equipment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements The department does not guarantee the equipment will operate to the user s satisfaction Before installing this equipment make sure you are permitted to connect it to the facilities of the local telecommunications company You must install the equipment using an acceptable method of connection In some cases you may also extend the company s inside wiring for single line individual service by means of certified connector assembly telephone extension cord You should be aware however that compliance with the above conditions may not prevent degradation of
11. roper phone number Refer to Sentry4 User Manual for assistance Modem Module Modem Programming The modem module can be programmed using HyperTerminal or other similar program via serial port on a laptop or PC 1 Move Jumper J8 on the Modem Carrier Board to the RS232 position Visually inspect the jumper pins 2 Plug the standard RS232 DB9 cable from the PC into connector P3 on the Modem Carrier Board 3 Open the HyperTerminal program on the PC a In HyperTerminal select File then Properties b Onthe Connect To tab select the comm Port you will use from the Connect Using drop down menu c Under Configure select 9600 baud 8 data bits 1 stop bit none flow control d Click the Call icon on the toolbar 4 Type AT amp V and enter a The modem should respond by listing the modem parameters as shown below If not try a few times this allows the system to perform auto baud detect if needed With the factory programming the modem response codes and local echo are disabled with commands EO and Q1 To view responses and commands set these parameters to El and QO Make sure these are returned to the proper configuration before putting the unit back into normal service Failure to do so will cause the communications to fail or be unreliable To reprogram a unit from factory default perform the following Page 10 10 31 2007 qq SYSTEMS 7 MILTON ROY MIU 100 Modem Interface Unit Datasheet Manual Guide
12. service in some situations Repairs to certified equipment should be made by an authorized Canadian maintenance facility designed by the supplier Any repairs or alterations made by a user to this equipment or equipment malfunctions may give the telephone communications company cause to request the user to disconnect the equipment For your own protection make sure that the electrical ground connection of the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas Caution Do not attempt to make electrical ground connections yourself contact the appropriate electric inspection authority or an electrician NOTICE The load number LN assigned to each terminal device denotes the percentage of the total load to the telephone loop used by the device to prevent overloading The termination on a loop may consist of any combination of devices subjectto the requirement that the total of the load numbers of all devices does not exceed 100 Page 4 10 31 2007 MIU 100 Modem Interface Unit Datasheet Manual Guide System Specifications ll Operating Temperature Operating Humidity Storage Temperature Surge Protection Standards Modem Line Speeds DTE Rates Error Correction Compression SYSTEMS MILTON 20 to 85 deg C 0 to 90 non condensing 55 to 85 deg C Power supply 8kVrms Anal
13. ted as the ring connection RS 485 An appropriate cable for the RS 485 communications link must now be installed A typical cable will be Beldon 9841 or equivalent UL Style 2919 It should be routed to the modem enclosure through the right most Myers hub connection in the bottom of the modem enclosure Connect the TD A signal from the N 300 controller s TB1 12 to the channel 3 on the hazardous side of the barrier in the modem enclosure Connect the TD B signal from the N 300 controller s TB1 11 to channel 4 on the hazardous side of the barrier in the modem enclosure Additionally the shield wire in the cable should be connected to TB 1 13 ONLY and should not be connected to anything at the MIU Barrier Wire N 300 TB1 3 Red 12 4 Black 11 None Shield 13 Page 7 10 3 1 2007 E systems 7 MILTON ROY MIU 100 Modem Interface Unit Datasheet Manual Guide Operation N 300 Verify that the MM 300 is properly set up to communicate with the N 300 controller Verify that the MODBUS Device Address in the N 300 controller Verify the N 300 COMM ports are set up for Sentry communication on COMM 2 Refer to the NJEX System User s Manual for configuration information Sentry4 Follow instructions in the SENTRY4 user s manual to set up software to dial the MIU 100 and access the N 300 system s Modem Carrier LED s indicate Modem Status Power Red Indication that the modem has po
14. wer TX Data Green Indication the modem is transmitting data to the host RX Data Green Indication the modem is receiving data from the host DTR Green Indication the modem is waiting for a host to call DCD Green Indication the modem is connected and detects a carrier Image 1 Modem Carrier Page 8 10 31 2007 T SYSTEMS MILTON ROY MIU 100 Modem Interface Unit Datasheet Manual Guide Troubleshooting Modem Carrier Status LED s INITIAL CONNECTED CONNECTED NO RS485 WIRING POWER DATA PRESENT DATA PRESENT REVERSED OR UP INCORRECT 485 GND POWER ON ON ON ON TX OFF BLINKING OFF ON DATA RX OFF BLINKING OFF OFF DATA DTR ON OFF OFF ON DCD OFF ON ON OFF The modem will not usually answer an incoming call when the RS485 wires are reversed or the RS485 ground is connected incorrectly Power Connection TB1 Polarity of input does not matter Power input should be between 10 and 40 Volts AC or DC TBI terminals are numbered right to left as viewed in Image 1 TB1 1 and TB1 2 bring power to the Modem carrier board TB1 3 is not used TB1 4 brings earth ground to the Modem carrier board The RED LED will blink or not illuminate at all if the supply voltage isn t stable RS 485 Connection TB3 RS485 network connections are fused for safe operation with a 5X20mm 200mA fuse in each signal path Voltage measured across a fuse indicates a blown fuse 120 Ohm network termination is controlled
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