Installing and Connecting the Basic System S5-95F
4.2.3 Using the Failsafe Onboard Digital Outputs
The onboard DQs are located on the left-hand side of the 40-pin connector. They are galvanically
isolated from the internal reference potential of the basic unit.
When connecting the DQ, make sure that one bit is assigned different terminals in subunit "A" and
"B". For connector pin assignment please refer to section 4.7.
Table 4-4. Terminal Assignment for Onboard DQ
DQ Channel Subunit A
Terminal Output Potential
Subunit B
Terminal Output Potential
Q 32.0
Q 32.1
Q 32.2
Q 32.3
Q 32.4
Q 32.5
Q 32.6
Q 32.7
2
3
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7
8
9
L+
L+
L+
L+
L-
L-
L-
L-
6
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9
2
3
4
5
L-
L-
L-
L-
L+
L+
L+
L+
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How to Program the Onboard DQ in DB1
You program the corresponding signal group for the failsafe outputs in DB1. The basic setting
(default) for the onboard DQ byte is signal group 0.
4-14
EWA 4NEB 812 6210-02
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