Appendix D - AutomationDirect
Contents
1. urrent target value On when the co unter current value equals the val D 4 DLO5 Micro PLC User Manual 6th Edition Rev C ue in V2376 V23772. SPECIAL RELAYS In This Appendix DLOS PLC Special Relays PENDIX Appendix D Special Relays DLOS5 PLC Special Relays Special Relays are contacts which are set by the CPU operating system to indicate a particular system event has occurred These contacts are available for use in your ladder program Knowing just the right special relay contact to use for a particular situation can save a lot of programming time Since the CPU operating system sets and clears special relay contacts the ladder program only has to use them as inputs in ladder logic D Startup and Real Time Relays On for the first scan after a power cycle or program to run transition only The relay is First scan reset to off on the second scan It is useful where a function needs to be performed only on program startup Always ON Provides a contact to insure an instruction is executed every scan Always OFF Provides a contact that is always off 1 minute clock On for 30 seconds and off for 30 seconds 1 second clock On for 0 5 second and off for 0 5 second 100 ms clock On for 50 ms and off for 50 ms 50 ms clock On for 25 ms and off for 25 ms Alternate scan On every other scan CPU Status Relays Forced run mode On when the mode switch is in the run position and the CPU is running Terminal run mode On when the CPU is in the run mode Test run mode On when the CPU is in the test run mode Test stop mode On when
3. mmunication error On when RX WX RD WT instructions are executed with the wrong parameters Table instruction overrun Value less than On if a table instruction with a pointer is executed and the pointer value is outside the table boundary Accumulator Status On when the accumulator value is less than the instruction value Value equal to On when the accumulator value is equal to the instruction value Greater than On when the accumulator value is greater than the instruction value Zero On when the result of the instruction is zero in the accumulator Half borrow On when the 16 bit subtraction instruction results in a borrow Borrow On when the 32 bit subtraction instruction results in a borrow Half carry On when the 16 bit addition instruction results in a carry Carry On when the 32 bit addition instruction results in a carry Sign On anytime the value in the accumulator is negative Pointer reference error On when the V memory specified by a pointer P is not valid Overflow On if overflow occurs in the accumulator when a signed addition or subtraction results in an incorrect sign bit Data error On if a BCD number is expected and a non BCD number is encountered Load zero On when any instruction loads a value of zero into the accumulator DL05 Micro PLC User Manual 6th Edition Rev C l D 3 Appendix D Special Relay
4. quals the va ue in V2342 V2343 urrent target value On when the co unter current value equals the va ue in V2344 V2345 urrent target value On when the co unter current value equals the va ue in V2346 V2347 urrent target value On when the co unter current value equals the va ue in V2350 V2351 urrent target value On when the co unter current value equals the va ue in V2352 V2353 urrent target value On when the co unter current value equals the va ue in V2354 V2355 urrent target value On when the co unter current value equals the va ue in V2356 V2357 urrent target value On when the co unter current value equals the va ue in V2360 V2361 urrent target value On when the co unter current value equals the va ue in V2362 V2363 urrent target value On when the co unter current value equals the va ue in V2364 V2365 urrent target value On when the co unter current value equals the va ue in V2366 V2367 urrent target value On when the co unter current value equals the va ue in V2370 V2371 urrent target value On when the co unter current value equals the va ue in V2372 V2373 urrent target value On when the co unter current value equals the va ue in V2374 V2375 OI OGIO Gl Ol OIG Gl OI Ool Gl OIl OIG OG G OoOO Oj O 0 0
5. s HSIO Pulse Output Relay SP104 Profile Complete On when the pulse output profile is completed Mode 30 Communication Monitoring Relay CPU port busy Port 2 On when port 2 is the master and sending data Communication error Port 2 On when port 2 is the master and has a communication error Communication busy Option card slot Communication error Option card slot Equal Relays for HSIO Mode 10 Counter Presets urrent target value On when the co unter current value equals the va ue in V2320 V2321 urrent target value On when the co unter current value equals the va ue in V2322 V2323 urrent target value On when the co unter current value equals the va ue in V2324 V2325 urrent target value On when the co unter current value equals the va ue in V2326 V2327 urrent target value On when the co unter current value equals the va ue in V2330 V2331 urrent target value On when the co unter current value equals the va ue in V2332 V2333 urrent target value On when the co unter current value equals the va ue in V2334 V2335 urrent target value On when the co unter current value equals the va ue in V2336 V2337 urrent target value On when the co unter current value equals the va ue in V2340 V2341 urrent target value On when the co unter current value e
6. the CPU is in the test stop mode Terminal PGM mode On when the mode switch is in the TERM position and the CPU is in program mode Forced stop On when the mode switch is in the STOP position Forced stop mode On when the STOP instruction is executed Interrupt enabled On when interrupts have been enabled using the ENI instruction D 2 DLO5 Micro PLC User Manual 6th Edition Rev C Override setup relay Appendix D Special Relays System Monitoring On when the override function is used Scan controller On when the actual scan time runs over the prescribed scan time Critical error On when a critical error such as 1 0 communication loss has occurred Warning On when a non critical error has occurred Diagnostics error On when a diagnostics error or a system error occurs Program memory error On when a memory error such as a memory parity error has occurred 1 0 error On when an 1 0 error such as a blown fuse occurs Communication error On when a communication error occurs on any of the CPU ports Fault instruction On when a Fault Instruction is executed Watch Dog timeout On if the CPU Watch Dog timer times out Grammatical error On if a grammatical error has occurred either while the CPU is running or if the syntax check is run V7755 will hold the exact error code Solve logic error On if CPU cannot solve the logic Co
Download Pdf Manuals
Related Search