maxPAC Hardware Reference Guide
Metso Automation MAX Controls Inc.
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277596
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10-2
Bus Address
This module requires one I/O one bus address.
Jumper Configuration
Jumper W1 configures all the outputs to either reset or fail in place when
there is no communications in the I/O Bus for more than 0.7 seconds.
Configuration is as follows:
Jumper
Position 2-2
Position 1-2
W1
Reset Output
Hold Output
For the IOP351 module, each channel can be strapped in the printed circuit
assembly for form A or form B operation per the following table. The default
configuration is form A for all channels.
Channel Number
Form A
Form B
1
R100
R101
2
R103
R104
3
R106
R107
4
R108
R109
5
R111
R112
6
R114
R115
7
R116
R117
8
R119
R120
9
R122
R123
10
R124
R125
11
R127
R128
12
R130
R131
13
R132
R133
14
R135
R136
15
R138
R139
16
R140
R141
Module Operation
The following is a simplified sketch of the circuit for one channel. The relay
drivers energize the relay coils and control the operation of the output LEDs
to correspond to the data in the I/O bus interface circuit. A watchdog timer in
the interface circuit controls the operation of the active LED, causing it to
blink when the module is not scanned for 0.7 seconds. It also controls the
state of the outputs on loss of communications.
