Functions of the IM 178-4
6-10
IM 178-4
C79000-G7076-C178-01
Assignment of the User Data Area of the Inputs
Table 6-4
User Data Area of the Inputs
Byte
Bit
Name or Value
Meaning
Data Format
Channel 0
0
0
REF1_Q
Acknowledgment for actual reference
value detection with 0I1 and zero mark
BOOL
1
REF0_Q
Acknowledgment for actual reference
value detection with 0I0
BOOL
2
SYN_Q
Acknowledgment for synchronization
BOOL
3
0
reserved
4
+/–
Direction of movement (0=negative di-
rection, 1=positive direction)
BOOL
5
SYNC
Actual value synchronized (only valid
after setting SYN)
BOOL
6
PARA
Channel parameter assignment error–
free
BOOL
7
–
irrelevant
1
0
0I0
Digital input 0
BOOL
1
0I1
Digital input 1
BOOL
2
0I2
Digital input 2
BOOL
3
0
reserved
4
EXTF0
Sensor signal cable error 0
BOOL
5
EXTF1
Sensor error
BOOL
6
EXTF2
Zero mark error
BOOL
7
0
reserved
2
0000
reserved
3
0000
H
reserved
4
5
6
Actual position value Channel 0
DINT
7
p
8
9
Actual reference value Channel 0
10
Actual reference value Channel 0
DINT
11