Digital modules
3.21 Digital output module SM 322; DO 16 x UC 24/48 V; (6ES7322-5GH00-0AB0)
S7-300 Automation System Module data
3-64 Manual, 08/2006, A5E00105505-04
Status displays
Each output of this module is equipped with a green LED to indicate the relay state. In
addition, a red LED (SF) indicates the diagnostics status of the module.
Diagnostics, troubleshooting
Diagnostic data are assigned according to the technical data listed below.
The four system diagnostics data bytes can be read in the additional interrupt information as
data record 0, or in the first 4 bytes of data record 1.
Structure of the data record and system diagnostics for SM 322 DO 16x UC 24/48V
Structure of data record 1:
Table 3-16 Structure of the data record for SM 322 DO 16 x UC 24/48 V
Data record 1 byte
address
Available information Contents
0..3 System-specific diagnostics data 4 bytes
4 Channel type 72h
5 Diagnostics data length per channel [in bytes] 0
6 Number of channels 16
7 Channel error vector 0 bit per channel
8..15 Channel-specific diagnostics data 0 byte per
channel
System diagnostics for SM 322;DO 16 x UC24/48 V:
Table 3-17 System diagnostics for SM 322 DO 16 x UC 24/48 V
System diagnostics byte 1: Technical data
D0: Module error Yes
D1: Internal error Yes
D2: External error Yes
D3: Channel error No
D4: External auxiliary voltage missing Yes
D5: Front connector missing No
D6: Module not programmed Yes
D7: Incorrect parameters Yes
System diagnostics byte 2:
D0..D3: Module class 1111
D4: Channel information available No
D5: User information available No
D6: Diagnostic interrupt from substitute No
D7: Reserve
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