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Technical description
1.1
General information about operation, safety instructions
Use of AS-i master CM 1243-2
The AS-i master CM 1243-2 is integrated in the S7-1200 automation system as a
communication module.
Safety instructions
Risk of explosion when connecting or disconnecting the device
Can cause death, serious injury, or property damage
Explosion hazard
Do not disconnect equipment when a flammable or combustible atmosphere is present.
NOTICE
Protection from transient overvoltage
Implement measures to prevent transient overvoltages of more than 40% of the rated
voltage. This is ensured if you operate the devices exclusively with SELV (Safety Extra Low
Voltage).
See also
Use of the AS-i master CM 1243-2 (Page 12)
Use of the AS-i data decoupling unit DCM 1271 (Page 13)
S7-1200 System Manual
(http://support.automation.siemens.com/WW/view/de/36932465/0/en)
AS-i master CM 1243-2 and AS-i data decoupling unit DCM 1271 for SIMATIC S7-1200
Manual, 04/2013, A5E02655230010A/RS-AA/003
WARNING
1
11
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