Siemens EF 837 Series Spécifications télécharger pdf (Page 51)

Section 4 Operation S800L I/O Module LED

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Marking Color Description

S(Status) Red Fault in the module

(1)

(1) Modules without self test function, for example, DI/DO modules: The S-LED will switch on to red at power up or

restart of the module and switch off after the first successful access to the module. Modules with self test function for

example, AI/AO modules: The S-LED will switch on to red at power up, restart of the module or when the module

goes to Error state. If the module has not gone to Error state it will switch off the S-LED after the first successful

access to the module.

Green Operational state

Module State Status Channel Status

Init Red Off

Not configured Red/Off

(1)

(1) Will be switched off after the first successful access to the module.

Off

Ready Off DI On/Off, DO Off

Operational Green On/Off

OSP Green On/Off

Error Red DI On/Off, DO Off

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Siemens EF 837 Series Spécifications Page 51