Hostlink via terminal

[angeraer 1]

Hello, I'm trying to figure out how hostlink works from previous posts in the forum. Till now I've been able to do some simple tests with my OMRON C200H, connected via a serial cable (9600, 7, Even, 2) to my Windows computer : ex: test the PLC : Command : @00TS123443* Response is the same as the command, so this is ok : @00TS123443* Read 3 words from DM100 Command : @00RD0100000354* Response : @00RD009876000080005E* meaning DM100=9876, DM101=0000, DM102=8000 Write value '1234' in DM101 Commands : 1. Put PC into MONITOR : @00SC0252* 2. Write '1234' into DM101 : @00WD0101123457* 3. Put PC into RUN : @00SC0352* 4. Read one word from DM101 : @00RD0101000157*, this gives @00RD00123452*. Now my question : I would like to read/write the input and output status for example for output bit 110.00 on an OD215 module. Is this possible? I've been looking at the I/O READ/REGISTER commands, but don't understand what they would do? I could always copy the status in the PLC program to some memory area and read/write over there if this isn't possible. Why : I would like to connect an Arduino (with Ethernet module) and Serial module to my PLC. On the Arduino I would like to write a web interface that lets me see the I/O status of my PLC and eventually turn my lights on/off with this web interface. Thanks, a lot! Andy.

[Jay Anthony 118]

Use the QQMR command to register specific I/O Bits to read: Then use the QQIR command to read the values of the same registered I/O bits:

[Jay Anthony 118]

To individually turn on a I/O bit use KS command: To individually turn off a I/O bit use KR command: To cancel all force set/force reset a I/O bit use KC command:

[Jay Anthony 118]

Some other readers will tell you about using the RR and RW commands and then through programming, test the on/off status for each bit, but I am not sure enough of your programming skills. Try the above methods first.

[angeraer 1]

Thanks for the info you gave me. I tried it and it works : Register the bit I would like to read (110.00) : Command : @00QQMRCIO 0110003A* Response : @00QQMR005F* (Returns OK) Read the status : Command : @00QQIR5B* Response : @00QQIR0016A* (Returns OK + 1 = ON) Afterwards I tried to change the bit status via the Forced Set command : Command : @00SC0252* (Put PLC in monitor mode) Response : @00SC0050* Command : @00KSCIO 0110003D* (Set the bit 110.00) Response : @00KS0058* Command : @00KRCIO 0110003C* (Reset the bit 110.00) Thanks a lot! Andy

[angeraer 1]

By sniffing the serial data being sent by CX Programmer, I noticed an undocumented command : @00MB.... example : @00MB1A03003C* @00MB160400004C* @00MB0D07000001008035* Anybody who has any info on this command? Regards, Andy.