CAN-8x23 user’s manual (Revision 3.20, Ma r/08/2012) ------
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2.9 I/O Pair-connection Mode
The CAN-8x23 provides the I/O pair-connection function. Before using this
function, you need to prepare two CAN-8x23s with DI and DO I/O modules
(such as I-8057W and I-8053W). When applying this function, the DI channels
and the DO channels are mapping with each other. That is to say that when the
DI channels of one CAN-8x23 get the ON signal, the corresponding DO
channels of the other one will be turned on.
When you completed the connection of these two CAN-8x23s by CAN bus,
you need to set the
ID rotary switch
of these two modules to 0x81 ~ 0xFE by
the special rule. Set the node ID to be odd for one module, and set the node ID
of another module to be the value which is equal to the node ID increased one
of the former. Therefore, they are the couple as the following figure.
For example, user uses a CAN-8123 with I-8057W and a CAN-8123 with
I-8053W to do I/O pair-connection. The connection structure is as follows.
