Table 29: Status Byte S0, Version 750-637/000-004 - WAGO 750-637 Series Manual

38 Process Image

Table 29: Status Byte S0, Version 750-637/000-004

Bit 7
0
LATC_VAL
LAT_EXT_VAL
CNT-SET_ACK
Enable_Cam_Ack
OUF
AckSet LoadExt
PF
0
Manual
Version 1.6.1
Status Byte S0
Bit 6 Bit 5 Bit 4
PF AckSet OUF
LoadExt
Ack Bit for EN-LATC (C0.0)
This bit is set on a positive edge at input C
Latch Mode:
Reset is carried out when EN_LATC is reset
This bit is set on a positive edge at input C
Preload Mode:
Reset is carried out when EN_LATC is reset
Ack Bit for EN-LAT_EXT (C0.1)
This bit is set on a positive edge at the Latch input
Latch Mode:
Reset is carried out when EN_LAT_EXT is reset
This bit is set on a positive edge at the Latch input
Preload Mode:
Reset is carried out when EN_LAT_EXT is reset
Ack Bit for CNT_SET (C0.2)
− Reset is carried out when CNT_SET=0.
Ack Bit for Enable_Cam (C1.6)
The command has been executed by the I/O module
− when the ack bit and the request bit are identical.
The cam outputs have the desired state.
Combined Overflow/Underflow Status Bit
Underflow function ("counter-clockwise" rotation)
1: On counter underflow from 0x00000000 to 0xffffffff
When counter value is then < 0xAAAAAAAA
On acknowledgement, i.e., positive edge RESET_OUF
0: (C0.4)
With an overflow event without previous
acknowledgement
Overflow function ("clockwise" direction of rotation)
1: On counter overflow from 0xffffffff to 0x00000000
When counter value is then < 0x55555555
On acknowledgement, i.e., positive edge RESET_OUF
0:
(C0.4)
For underflow event without previous acknowledgement
Ack Bit for SetLoadExt
− Reset is carried out when SetLoadExt=0 (C0.5)
Powerfail — A Loss of Field Power Supply is Reported
1: Field voltage is < 5 V
0: Field voltage is > 20.4 V
After a power failure, all cam windows are set to 0.
The counter reading is set to 0.
Reserved
Public
WAGO I/O System 750
750-637 Incremental Encoder Interfaces
Bit 3 Bit 2
Enable_ CNT-SET_
Cam_ ACK
Ack
Bit 1 Bit 0
LAT_ LATC_
EXT_ VAL
VAL