Siemens SIMATIC ET 200SP HA Equipment Manual - Page 40

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Parameters, diagnostics messages and address space

A.3 Diagnostics messages

Channel parameters

Each channel parameter block contains the cable parameters for the digital output (4 bytes).

The following figure shows the configuration of the channel parameters for channels 0 to 15.

x = 12 + (channel number * 2); with channel number 0...15

All unused bits and the bits or bytes marked as "reserved" must be set to zero.

You activate a channel parameter by setting the corresponding bit to "1" or the corresponding

value.

A.3

Diagnostics messages

Diagnostics alarms

A diagnostics message is generated for each diagnostics event and the DIAG LED on the DQ

16x24VDC/0.5A HA flashes red or the MT LED lights up yellow.

In addition, channel-specific channel diagnostics are displayed through the corresponding

channel error/status LEDs.

The diagnostics messages can be read in the diagnostics buffer of the CPU.

Diagnostic messages are assigned either channel-specific to an output or assigned as module

messages to all outputs. All channels are switched off for diagnostics messages that affect the

DQ 16x24VDC/0.5A

Equipment Manual, 10/2021, A5E39265993-AD