Siemens SIMATIC ET 200C, Manual

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ET 200C Distributed I/O Station
EWA 4NEB 812 6119-02b
4.4.4 Setting Connection Mode for Analog Module ET 200C;
AO 4 12 Bit
The lower printed-circuit board in the analog module ET 200C;
AO 4
12 Bit accommodates the following module-specific DIL switch
block:
Table 4-25 Module-specific DIL-switch block in ET 200C; AO 4 12 Bit
DIL switch block Function Default setting
(as delivered)
S2 Select 2-wire or 4-wire con-
nection mode
OFF
4-wire connection
mode
Note
The DIL switch of DIL switch block S2 must be set to ON for 2-wire
connection mode, as otherwise an error of + 2 % would occur at the output.
The rules for setting the connection mode for the analog module ET 200C;
AO 4
12 Bit by means of the DIL switches are as follows:
The analog module ET 200C; AO 4 12 Bit is intended primarily for
high-end control functions with 4-wire configurations. You should use the
2-wire option only in exceptional cases.
If you have to use 2-wire connection, set the DIL switches of DIL switch
block S2 in the analog module ET 200C; AO 4
12 Bit accordingly
When you close the module, make sure that the cover is correctly seated
as damage may occur if the cover is not aligned with the casing.
Basic Requirement
Rules
Mechanical and Electrical Installation