If more communication channels with interfaces are needed (up to 4 RS-232, RS-485 communication channels), the submodules fitted with three communication channels, CH2 to CH4, can be used in the CH2 slot. The CH2 communication interface is terminated in C or D connectors (for details see 2.3.3) and as a standard it is not fitted with any submodule. The customer can select - depending on the required combination of interfaces (RS-232, RS-485) - an appropriate submodule and fit it into the free slot inside the basic module (submodule installation procedure is described in the manual TXV 004 03).
If four communication channels (some basic modules have three) are not enough, it is possible to add several serial channels RS-232, RS-485 or CAN via the SC-1101 and SC-1102 external communication modules.
Table.1: Interface combination for individual channels in accordance with the fitted submodule in CH2 position
Submodule |
CH1 |
CH2 |
CH3 |
CH4 (CH31)) |
not fitted |
RS-232 |
none |
none |
none |
MR-0104 |
RS-232 |
RS-232 |
none |
none |
MR-0114 |
RS-232 |
RS-485 |
none |
none |
MR-0124 |
RS-232 |
RS-422 |
none |
none |
MR-0105 |
RS-232 |
RS-232 |
RS-485 |
RS-232 |
MR-0106 |
RS-232 |
RS-232 |
RS-485 |
RS-485 |
MR-0115 |
RS-232 |
RS-485 |
RS-485 |
RS-485 |
galvanic isolation |
NO |
YES, always |
YES, always |
YES, always |
CP variants |
CP-10xx |
CP-10xx |
CP-10x4, CP-10x5, CP-10x0 |
CP-10xx |
1) The basic modules CP-10x6 and CP-10x8 have this communication channel (in the Table CH4) terminated as CH3 (the channel marked as CH3 in this Table is not terminated in the connector in these CPs).