750-654, 750-654/000-001 [Data Exchange Module]
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9
Functional
description
WAGO-I/O-SYSTEM 750
I/O Modules
Approvals
DEKRA
II 3 G Ex nA II T4
Conformity Marking
More Information
Detailed references to the approvals are listed in the document "Overview
Approvals WAGO-I/O-SYSTEM 750", which you can find on the CD ROM
"AUTOMATION Tools and Docs" (Item-No.: 0888-0412)
or in the internet under:
Documentation
WAGO-
I/O-SYSTEM 750
System Description
2.1.1.7 Functional description
The integrated watchdog function switches all outputs to zero if there is no
valid information for more than 200 ms via the multiplex connection.
The 128 bytes input buffer provides for high rates of data transmission. When
using slower speeds, you can collect the received data with lower priority
without loosing data.
The 16 byte output buffer provides for faster transmission of larger data
strings.
The data exchange module is connected peer-to-peer. For the wiring of the
serial multiplex connection the RxD and TxD cables are crossed. The
following illustrations show the peer-to-peer connection and the internal
structure of the data exchange module.
TxD
TxD
RxD
RxD
M
M
M
M
S
S
S
S
13
13
14
14
C
C
D
D
B
B
A
A
750-654
750-654
TxD
TxD
RxD
RxD
__
__
__
__
Fig. 2.1.1-4: Point-to-Point connection
g065402d
