Hello,
I have a question about getting individual bit information from a double word using Siemens S7. We use Siemens OP panels and the alarm messages there are reading double words from our PLC and then triggering the OP panel alarms. The OP panel reads the bits from the double word and activates the correct alarm when it is triggered in the PLC. We also want to use Wonderware Intouch on the same network and send the alarms there as well. How do I get the bit information from a double word or word into Intouch using S7 messaging protocol? Is there a certain syntax to be able to read that correctly? I tried in the S7 monitor/modify variables to see if I could even monitor a bit from the word and I typed in the address using DB??.DBW12.8 (bit is number 8) but of course it says syntax error. If I cannot read that information in Intouch, how can I convert it in the PLC so I can read individual bits from the double word?
Thanks ahead of time!
PK
I have a question about getting individual bit information from a double word using Siemens S7. We use Siemens OP panels and the alarm messages there are reading double words from our PLC and then triggering the OP panel alarms. The OP panel reads the bits from the double word and activates the correct alarm when it is triggered in the PLC. We also want to use Wonderware Intouch on the same network and send the alarms there as well. How do I get the bit information from a double word or word into Intouch using S7 messaging protocol? Is there a certain syntax to be able to read that correctly? I tried in the S7 monitor/modify variables to see if I could even monitor a bit from the word and I typed in the address using DB??.DBW12.8 (bit is number 8) but of course it says syntax error. If I cannot read that information in Intouch, how can I convert it in the PLC so I can read individual bits from the double word?
Thanks ahead of time!
PK