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8.2  TR48DIOC 
  The TR48DIOC output specifications are Source type. 
Because the input specifications use bidirectional photocouplers in the input circuit, 
the selection of INCOM* enables switching between Source type and Sink type. 
  8.2.1  Connecting the Extension Input Signal Cable 
  The connection of the extension input signal cable uses the connector XM3A-3721 
(plug type) and XM2S-3711 (connector cover) supplied with the TR48DIOC. The 
TR48DIOC inputs (DI_101 to DI_128 (Station 0) and DI_133 to DI_160 (Station 1), 
are connected to the connector INPUT on the module panel.