00191134-03 - 第127页
GEM for SIPLACE V5.01 ©Siemens AG, all rights r eserved page 127 of 252 6WUHDP not used
GEM for SIPLACE V5.01
Page 126 of 252 ©Siemens AG, all rights reserved
6WUHDP
not used
GEM for SIPLACE V5.01
©Siemens AG, all rights reserved page 127 of 252
6WUHDP
not used
GEM for SIPLACE V5.01
Page 128 of 252 ©Siemens AG, all rights reserved
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Unless otherwise noted in this section, the Communications State is "Communicating"
and the Control state is either "On-Line/Local" or "On-Line/Remote".
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Assumption: Equipment's Communication state is "Enabled/Not Communicating".
Step SECS Message Description
1. H <- E S1F13 W Equipment attempts to send Establish
Communications Request.
2. If the send is not successful, or if no reply is
received from the Host, wait
„ESTABLISHCOMMUNICATIONSTIMER“
seconds, then go to step 1.
3. H -> E S1F14 The Host responds with Establish
Communications Acknowledge. If COMMACK
in this message is non-zero, wait
„ESTABLISHCOMMUNICATIONSTIMER“
seconds, then go to step 1. If COMMACK is
zero, proceed to the next step.
4. Communications is successfully established.
The Equipment changes its communication
state to Communicating. Normal SECS
message processing begins.