8-22 Serial Communications
1560D-UM051D-EN-P – February 2005
Remote I/O Examples (cont.) I/O Addressing
The 1203-GD1 communcation module uses one-slot addressing. Based on
the module switch settings as described above, the discrete I/O can be
mapped to the PLC I/O Image as shown below.
PLC I/O Group Number Output Image Input Image
0 Block Transfer Block Transfer
1 Logic command Logic Status
Addressing Format
I : 02 0 / 12
I for input or O for output
2-digit I/O rack number
I/O group number (0-7)
Input or output number
(octal bit address; 0-7, 10-17)