Siemens GCP5000 Instruction & Installation Manual page 272

BASIC APPLICATION GUIDELINES & PROGRAMMING
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For example, let's say IN 7.5 is assigned to its normal default function of GP 1.1, but we want to
also start a timer when GP 1.1 picks, then set:
•
Int.1 Sets Timer 1 Start
•
Int.1 Set byGP 1.1
•
Int.1 Not False
If we want to start the timer when GP drops, then set
•
Int.1 Sets Timer 1 Start
•
Int.1 Set byGP 1.1
•
Int.1 Not True
The timer 1 expiry is available as Timer 1 Expired, this can be used in the logic equations or
assigned to an output.
Note that the internal channels also provide an alternate way to AND together terms. When a
System Input is used multiple times in either the Input Assignments, Equations, Vital Comms
Rx, or Internal I/O channels, the controlling inputs are all ANDed so all need to be energized to
energize the System Input for example, if the following were all used to set AND 2 Enable, then
if any of IN 1.1, IN 1.2, General IP 1 or General IP 2 was de-energized, the AND 2 Enable would
be de-energized.
•
IN 1.1 AND 2 Enable
•
IN 1.2 AND 2 Enable
•
Int.1 Sets AND 2 Enable
•
Int.1 Set by General IP 1
•
Int.2 Sets AND 2 Enable
•
Int.2 Set by General IP 2
An internal channel can be used to negate a state, for example, if NOT AND 1 XR is required,
set:
•
Int.1 Sets General OP 1
•
Int.1 Set by AND 1 XR Enable
•
Int.1 Not Yes
SIG-00-22-02
Version: B.1
5-28
JUNE 2022 (Revised September 2022)