what is the different between CPM2A and C200HX-CPU44 of omron controller
I think,many plc user of omron should be has question for what is the different between CPM2A and C200HX-CPU44 of omron controller.
There are 2 different Ethernet adapter for PLC Series CP.
1 is designed CP1W-CIF41 Omron Japan, the other is the U.S. Omron developed CP1W-ETN01-USA.
They have slightly different data, but are very similar in concept.
One of the two devices is essentially an Ethernet serial converter, so that both some limitations on an Ethernet module on the bus directly to the PLC CPU as CS and CJ Ethernet modules are compared.
The CP1W-CIF41 uses the protocol Toolbus on the PLC, and has a maximum length frame of ~ 1000 bytes.
The CP1W-ETN01 US-CV-mode uses the Host Link protocol on the PLC, and has a maximum length frame of ~ 500 bytes.
The recommended combination of not more than 2 devices to an Ethernet adapter is due to the limited buffer and the speed of the device. 2-vessel work very well, but more than that and what can be difficult.

It is an environment in direct support of the Nazi design CIF41 (limiting the length of the frame Ethernet frame NS).
If you choose to replace with a series CPM2A CP, and want everything about the Ethernet and share, I would suggest the following:
Use a CP1L or CP1H PLC with 2 plug-in card slot.
Use 1 CP1W communicate with the touchscreen-CIF41 NS.
Use 1 CP1W-US ETN01 with Wonderware and communicate CX-Programmer.
I know it sounds strange, but it is a good configuration. Design CIF41 allowed only 1 PLC. The CIF01-USA do not have this restriction coexist, and happy, with a CIF41.
I glanced at the map EWON suggested that PDL. I do not know if it C Host Link mode supported (the instruction set of the CPM2A and family alpha C200H used) or only the Host Link Mode CV (curriculum vitae, CJ1, CJ2, CS1, CP1H, CP1L).
If you’re a good driver support for Wonderware Omron PLC Series C, where the present with the Digi serial Omron Ethernet adapters can be found, is a good choice. These costs could be lower and faster to implement.
If you incorporate the machine for many years to plan, it might be useful to CPM2A one CP1L or CP1H to update together with an update CS1 to C200H alpha.
Tags: C200HX CPU44, CP1W CIF41, CP1W ETN01 USA, CPM2A, Ethernet adapter, plc, programmable logic, protocol