00193786-01 - 第135页
SIPLACE GEM SW Version GEM 505.01 HOST Interface Manual ©Siemens AG, all rights reserved page 135 of 236 4.16 Stream 14 not used
SIPLACE GEM SW Version GEM 505.01 HOST Interface Manual
Page 134 of 236 ©Siemens AG, all rights reserved
4.15 Stream 13
not used
SIPLACE GEM SW Version GEM 505.01
HOST Interface Manual
©Siemens AG, all rights reserved page 135 of 236
4.16 Stream 14
not used
SIPLACE GEM SW Version GEM 505.01 HOST Interface Manual
Page 136 of 236 ©Siemens AG, all rights reserved
5 SECS Scenarios
Unless otherwise noted in this section, the Communications State is "Communicating"
and the Control state is either "On-Line/Local" or "On-Line/Remote".
5.1 Equipment Communications
5.1.1 Equipment Establishes Communications
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.