CSZ EZT-570i, Техническое руководство

Страница: 67 / 95

EZT-570i Technical Manual
67
7.3 Control Module Status Indicators
All of the digital input and output points on the PLC have indicator lights that tell whether the input or
output is on or off. The lights are numbered for quick identification. By using the status lights, it can
help diagnose a wiring or component problem in the system. For example, if the output light on the
control module is on indicating that the output relay should be on, and the relay is off, it could indicate
a bad relay or a problem with the wiring to the relay.
The input and output numbering is octal based. That means that the inputs and outputs increment in
groups of 8 and are assigned sequentially as the input and output cards are added. The first group of
inputs is I0-I7 (on the CPU) while outputs are Q0-Q7. As additional I/O cards are added, the
numbering jumps to I30-I37 and Q30-Q37. The range of Q10-Q27 is skipped.
The digital input option and customer event output option cards must be installed as the last
input and output card (right most position) on the control module CPU. This assures that the
proper I/O number assignments are given to the inputs and outputs used for chamber control.
Figure 7-1 Control Module Input/Output Indicators
16 Point Output Card
0-7 = Q30-Q37
10-17 = Q40-Q47
16 Point Input card
0-7 = I30-I37
10-17 = I40-I47
CPU Connector 1
0-7 = I0-7
CPU Connector 2
0-7 = Q0-7