We did it!
As mentioned in the previous post, we had obtained two units of the I-7000 modules from ICP-DAS. One of them is a 16-bit, 8 channel analog input module, ?and the other is a 2 channel, 12-bit analog output module that support 0-10V, 0-20mA or 4-20mA. Both modules proved to work readily with the M-series PLC via its RS485 port. We have written an application note and some sample .PC5 programs for working with these modules which can be found at the following link:
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Multiple units of I-7000 can be multi-dropped from a T100MD+ or MX+ PLC, allowing hundreds of analog I/Os to be connected to a single PLC. Since the PLC can also be a MODBUS slave this can also serve as an ultra low cost RTU subsystem.
ICP-DAS also have other modules that may be of interest to M-series PLC users. These include one that connect up to 8 channel of thermocouple input directly. That means no need for expensive signal conditioners! Just plug the J,K or other types of thermocouple to the module's inputs, connect up to the PLC's RS485 port and instantly the PLC will be monitoring up to 8 temperature zones.
You can now purchase the I-7017, I-7018, I-7022 and I-7024 directly from us.