Rather simple question Im sure…but we always store our alarms in bits within data registers. So we are using 3 data registers which is 1200,1201,1202 in our PLC which modbus addressing is 1201,1202,1203 but I configured the offset in ignition so they would be the same…my question is, If bits 0-14 are each an alarm in register 1200, and bit 5 in register 1201, and bit 0 in register 1202 how exactly do I read them? I mean I know how to read a bit in a register, but does that mean I have to have register 1201 listed in my OPC tags 14 times since we are using the first 15 bits (0-14) in that register for an alarm and then go in and manually tell the path which bit to read in that register or is their a way to just put in if bit 0 on = this alarm, bit 1 is on = this alarm…etc…but since their is gaps where we are not using all the bits within a register for alarms sometimes only one bit in a register may be used before it skips to another register was not sure of best way of going about the bit reading…
You’ll need a SQLTag for each bit, there’s no shortcuts. Hopefully this kind of thing will get better in a future update when we focus on revamping alerting.