When the LED of an expansion unit flashes Red it means that it is unable to communicate correctly with the CPU. Please check connections are securely fitted and that each expansion has a unique ID. Check also that the CPU’s COM port is Active.
Yes – If you are using expansion units (EXM-E-) with your GSM CPU then you cannot use EXM-E-RS485 as well. If you require RS485 on your GSM CPU system, then please choose the PRO-RS485, which plugs into the programming port of the PLC CPU. If you are not using ANY other expansion units with yourRead More
If you need to send a SMS to multiple phone numbers, you must ensure the trigger to the SMS message block is enable for at least 10-seconds per number. So if you have two numbers that need to receive the SMS, then the trigger MUST be On for at least 10-seconds. For three numbers, thenRead More