Siemens SIMATIC ET 200SP Manual page 26

Connection
4.1 Terminal assignment
General terminal assignment
Table 4- 1 Terminal assignment of the CM AS-i Master ST
Terminal Assignment
1
2
3
4
5
6
1L, 2L
1)
1N, 2N
1)
1) The terminals are connected through in the BaseUnit.
Connecting an external "SET" button
You can connect a "SET" button to terminals "SET1" and "SET2" of the AS-i master. This
enables you to apply the ACTUAL configuration of the connected AS-i slaves as the
CONFIGURED configuration. This function is activated by closing the button contact on the
SET1 and SET2 terminals.
The maximum cable length between the terminal and "SET" button is 0.5 m.
Use two wires routed in parallel for connecting the button (not included in the scope of
delivery).
See also
"ET 200SP Distributed I/O System" System Manual
(http://support.automation.siemens.com/WW/view/en/58649293/0/en)
"ET 200SP BaseUnits" Manual
(http://support.automation.siemens.com/WW/view/en/59753521/0/en)
26
Description
SET1 Connection of the "SET" button (optional),
see "Configuration of the AS-i slaves using the "SET" button (Page 34)"
SET2
RES Reserved
RES Reserved
RES Reserved
RES Reserved
ASI+ Connection of the AS-i cable, positive polarity
ASI- Connection of the AS-i cable, negative polarity
AS-Interface master CM AS-i Master ST (3RK7137-6SA00-0BC1)
Manual, 07/2017, A5E02655262020A/RS-AD/004