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Communications Capabilities
Special Points to Observe when Using the CP 525 and CP 526 in RESTART Mode
Note
If the CP 525 and CP 526 are used in the S5-115U, the interprocessor communication
flag area enabled on the CPs in RESTART mode should be reset on restart in connection
with the following CP functions:
CP 525 (6ES5 525-3UA11):
- Component:
- Component:
general:
CP 526 (6ES5 526-3Lxxx):
- Basic board:
Before synchronizing the CPs, an FB should be called in OB21/22. This FB should be programmed
as shown in the following example:
Example:
Function block FBxxx (e.g. FB11) for resetting the interprocessor communication flag area on a CP.
The communication flag areas enabled by jumpers on the CP can be reset with the following
block. This FB must be specified with its starting flag byte (V-FY) and end flag byte (B - FY) for each
contiguous communication flag area.
If a flag byte that does not define an area boundary is specified here, the entire area is still reset.
V-FY
:
FY35
B-FY
:
FY165
This resets the communication flag area from flag byte FY 32 to flag FY 191. This area must
naturally have been enabled on the CP.
12-4
Event printer if group disable bits are used
Operator-process communication and visualization with the 3975
display unit if bit set and reset commands are used
Group disable bits should always be located in the interprocessor
communication flag area enabled per jumper setting.
If bit set and reset commands are used
(from)
(to)
S5-115U Manual
EWA 4NEB 811 6130-02b
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