Functions of the IM 178-4
6-8
IM 178-4
C79000-G7076-C178-01
6.2
User Data Interface
Addresses
The inputs and outputs of the IM 178-4 are addressed starting at the input or
output module base address.
Assignment of the User Data Area of the Outputs
Table 6-3
User Data Area of the Outputs
Byte
Bit
Name or Value
Meaning
Data Format
Channel 0
0
0
0Q0
Digital output 0
BOOL
1
0Q1
Digital output 1
BOOL
2
0Q2
Digital output 2
BOOL
3
0
reserved
4
0
reserved
5
0
reserved
6
0
reserved
7
E0AO
Enable analog output
BOOL
1
0
REF1
Trigger actual reference value detection
with OI1 and zero mark
BOOL
1
REF0
Trigger actual reference value detection
with 0I0
BOOL
2
SYN
Trigger synchronization
BOOL
3
0
reserved
4
0
reserved
5
0
reserved
6
0
reserved
7
EXTF_Q
Group error acknowledgment
BOOL
2
Rotational speed setpoint (bit15: sign, bit
2 to 14: value bit 0 and 1: irrelevant)
INT
3
p
p
(
g
2 to 14: value, bit 0 and 1: irrelevant)