Control/Status Byte; Table 16: Control Byte C0; Table 17: Status Byte S0 - WAGO 753-1630 Manual

40 Process Image
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5.1

Control/Status Byte

The control/status byte is shown in the process image independent of user-
specific parameterization of the SMI master module.
If bit 7 is set in the control byte, register communication is always active and
process data communication inactive.

Table 16: Control Byte C0

Bit 7
RegCom
-
--
Mailbox
RegCom
In the status byte, only another diagnostic is shown next to the diagnostic of a
general error in the event of an error. If several errors are detected at the same
time, the diagnostic with the highest priority is shown (see table below).

Table 17: Status byte S0

Bit 7
RegCom
-
Field-side
supply
Short circuit
Mailbox
General Error
RegCom
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Manual
Version 1.2.0 FW/HW Version 02/01
Control byte C0
Bit 6 Bit 5
-- Mailbox
Not used
Reserved
Mailbox 2.0 in the process data
0 – Mailbox deactivated
1 – Mailbox activated
Register communication
0 – Register communication deactivated
1 – Register communication activated
Status Byte S0
Bit 6 Bit 5
General Mailbox
Error
Not used
Undervoltage field supply
0 – Power supply is sufficient.
1 – Power supply is too low
SMI short circuit detection:
0 – No short circuit detected
1 – Short circuit on the SMI connections detected
Mailbox 2.0 in the process data:
0 – inactive
1 – active
General error status with inactive register
communication:
0 – inactive
1 – active
Register communication:
0 – inactive
1 – active
753-1630 SMI Master Module 230 V AC
Bit 4 Bit 3 Bit 2
- -
Bit 4 Bit 3 Bit 2
Short Field
circuit supply
Bit 1 Bit 0
- - -
Bit 1 Bit 0
- - -
Medium priority
Low priority
High priority