ROC364 Instruction Manual
2-5
Master Controller Unit, I/O Module Rack, and Wiring
Rev Jun/05
2.2.4 I/O Module Rack
The I/O module rack provides sockets for up to 16 I/O modules. Refer to Figure 2-3. Up to 64 I/O
modules can be used in any combination of Discrete Inputs, Discrete Outputs, Analog Inputs, Analog
Outputs, and Pulse Inputs. A minimum of one rack is required for any ROC connected to field I/O, and a
maximum of four racks can be accommodated. The first rack plugs directly into the I/O module rack
connector on the bottom edge of the MCU. Additional racks plug into each other.
1
2
3
4
8
7
6
5
9
14
15
16
13
12
11
10
A
B
C
C
B
A
C
B
A
C
B
A
C
B
A
C
B
A
C
B
A
C
B
A
A
B
C
A
B
C
A
B
C
A
B
C
C
B
A
C
B
A
C
B
A
C
B
A
MODULE RACK
GND
GND
A
®
DOC0030C
Figure 2-3. I/O Module Rack
