Diagnostics Using the User Program
10-13
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
10.2.5
H status
The IM 157 delivers the H status only if it is connected to the redundant DP master
system of an S7-400H. The H status reports on the status of the active and
passive IM 157. The H status consists of 8 bytes.
Structure of the H status
Byte 160
Bit no.
Length of the diagnostic blockincluding byte 160 (= 8 bytes)
Code for station diagnosis
7 6 5 4 3 2 1 0
0 0 0 0 1 0 0 0
1EH: Parameter assignment status (switchover by DP master)
1F
H
:
H status of activated IM 157
Code for status message
7 6 5 4 3 2 1 0
1 0 0 1 1 1 1
Byte 161
Bit no.
Byte 162
0
Always “0”
Byte 163
Not applicable
Byte 164
Not applicable
7 6 5 4 3 2 1 0
0 0 0
0
Byte 165
Bit no.
H status 1: status of the IM 157
1: deactivated
1: activated
1: IM 157 is engaged in data exchange with the underlying slaves
1: Master status: clear
7 6 5 4 3 2 1 0
0 0 0
0
Byte 166
Bit no.
H status 2: status of the partner IM 157
1: deactivated
1: activated
1: IM 157 is engaged in data exchange with the underlying slaves
1: master status: clear
Byte 167
0
H status 3: always “0”
Figure 10-7
Structure of the H status of the IM 157 in redundant operation on the S7-400H
Содержание Simatic 6ES7 157-0AC80-0 A0 Series
Страница 14: ...Contents xiv DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 42: ...Installation 3 12 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 70: ...Commissioning the DP PA Link 6 12 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 162: ...Technical Specifications B 40 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 170: ...Order Numbers and Accessories D 4 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 178: ...Glossary Glossary 8 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...
Страница 182: ...Index Index 4 DP PA Link and Y Link Bus Couplings A5E00193841 01 1 ...