C200H-ID217 - Input Module - OMRON

Group-2 High-density I/O Units come in two varieties; C-shape and D-shape. The shape of the two varieties is the same, but C-shape Units have only one con- nector, while the D-shape Units have two. C-shape Units have 32 I/O points and D-shape Units have 64 I/O points.

C-shape Units (32-point Units)
Group-2 High-density I/O Units are allocated I/O words in the IR Area (IR 030 to IR 049) by setting the I/O number switch on the front of each Unit. C-shape Units are allocated 2 words and D-shape Units are allocated 4 words beginning with m, where m = IR 030 + 2 × I/O number.
For C-shape Units the 16 I/O bits in m are allocated to the A side of the connector, and the I/O bits in m+1 are allocated to the B side of the connector. For D-shape Units the I/O bits in m are allocated to the A side of connector 1, the I/O bits in m+1 are allocated to the B side of connector 1, the I/O bits in m+2 are allocated to the A side of connector 2, the I/O bits in m+3 are allocated to the B side of con- nector 2. Refer to the C200H Operation Manual (CPU21-E/23-E/31-E) for more details on I/O word allocation.
Always turn the PC power off before changing a Unit’s I/O number. The new I/O number will not be recognized unless the PC has been turned off. Do not set more than one Unit to the same I/O number or set I/O numbers so that the same I/O word is allocated to more than one Unit, e.g., if you set a 64-point Unit to I/O number 0, you cannot use I/O number 1 for any Unit.
Some High-density I/O Units are classified as Special I/O Units. Up to 10 Special I/O Units can be connected to a PC. The Units have two 24-pin connectors. In general, these Units control 32 I/O points, although some Units can control 128 I/O points when set for dynamic operation.

High-density I/O Units are each allocated 10 I/O words in the IR Area (IR 100 to IR 199) by setting the unit number switch on the front of each Unit. The 10 words begin with n, where n = IR 100 + 10 × unit number. For example, a Special I/O Unit with a unit number of 3 would be allocated IR 130 to IR 139.
Always turn the PC power off before changing a Unit’s unit number. The new unit number (0 to 9) will not be recognized unless the PC has been turned off.