1747-6.22, Backup Scanner User Manual
1747-6.22, Backup Scanner User Manual
1747-6.22, Backup Scanner User Manual
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6-92 Module Control and Status Word<br />
Module Status Word The Module Status Word (MSW) shows the status of the <strong>1747</strong>-BSN<br />
module itself and its counterpart in the remote system. Bits 0 through<br />
7 show the local status while bits 8 through 15 show the remote<br />
status. The module status bits have the following meaning:<br />
M1:s.3401<br />
Publication <strong>1747</strong>-<strong>6.22</strong><br />
15<br />
0 14<br />
0 13<br />
0 12<br />
0 11<br />
0 10<br />
0 9<br />
0 8<br />
0 7<br />
0 6<br />
0 5<br />
0 4<br />
0 3<br />
0 2<br />
0 1<br />
0<br />
LOCAL MODULE BITS<br />
HSSL<br />
LSL<br />
Buffer Full<br />
DH+ Communication<br />
RIO Communication<br />
Processor Fault<br />
Primary/Secondary System<br />
Reserved<br />
REMOTE MODULE BITS<br />
HSSL<br />
LSL<br />
Buffer Full<br />
DH+ Communication<br />
RIO Communication<br />
Processor Fault<br />
Primary/Secondary System<br />
Reserved<br />
• HSSL: High-Speed Serial Link status: This bit is set when the<br />
HSSL is faulted or has communication errors in the local <strong>1747</strong>-<br />
BSN module (bit 0) or in the remote one (bit 8). The normal state<br />
of this bit is OFF;<br />
• LSL: Local Status Link status: This bit is set when the Local<br />
Status Link is not working well in the local system (bit 1) or<br />
remote system (bit 9). If the system has only one <strong>1747</strong>-BSN<br />
module in each chassis, then the LSL is not used and this bit is<br />
reset. The normal state of this bit is OFF;<br />
• Buffer Full: This bit is set when the secondary <strong>1747</strong>-BSN is<br />
receiving a second block of data before the reading of the first<br />
block by the secondary SLC 5/0x. It could be occurring in the<br />
local system (bit 2) or remote system (bit 10);<br />
• DH+ Communication: This bit is set when a problem occurs<br />
with the DH+ network in the local (bit 3) or remote (bit 11)<br />
<strong>1747</strong>-BSN module. The type of problem that may occur is<br />
different for primary and secondary systems (as shown below).<br />
The normal state of this bit is OFF):<br />
0<br />
0<br />
1. Primary mode: the network is down or the channel is<br />
seeing communication errors;<br />
0. Secondary: communication errors to the secondary SLC<br />
5/04;