Chapter 9 • Communications and Networking
9-8
Rev. 6, March 2011
Part 17997
When using a modem, each Hydran 201T
i
can be set to either one of the two following
modes (in the
Communication
submenu; see Section 4.5.6 on page 4-21):
•
Call OnAlarm
: In this mode, the H201T
i
communicates with the Hydran Host software
through a telephone line each time a gas or fail alarm condition is detected (to select this
mode, see Section 9.6.3 on page 9-13).
•
AnswerOnly
: In this mode, the H201T
i
remains silent until a host computer running the
Hydran Host software communicates with it.
In the
Call OnAlarm
mode, the following actions are performed when an alarm is
triggered:
• The H201T
i
sends the
ATDS0
command through the selected communication channel
(RS-232 or supervisory link; see the
CommChannel
and
DefaultChannel
parameters
in the
Communication
submenu).
• The Hayes-compatible modem receiving this command dials the telephone number
previously stored in its register 0; this number is redialed until the connection with the
host computer’s modem is established. Then, no other message is sent; the host computer
has the responsibility to communicate with the H201T
i
in alarm.
• The Hydran Host software answers and receives the alarm message.
• The Hydran Host software displays the alarm states and updates its data bank.
• The user must acknowledge the alarm in the Hydran Host software and take the
appropriate measures.
Note: Acknowledging the alarm in the Hydran Host software does not turn off the
illuminated push-button of the Hydran 201Ci-1 Controller.
9.4
COMMUNICATION PROTOCOL
For serial communications, General Electric Canada uses its own protocol. Data is
transmitted in ASCII codes; data clusters being transmitted are verified and, if necessary,
transmitted again.
9.5
LOCAL NETWORK INSTALLATION
Read first the explanations in Section 5.2.4 on page 5-13.
Содержание Hydran 201i
Страница 1: ...GE Energy Services Digital Energy Hydran Instruction Manual 201i System ...
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Страница 36: ...Chapter 1 Introduction 1 10 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 72: ...Chapter 3 Hydran 201Ci Controllers 3 16 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 114: ...Chapter 5 Before Installation 5 16 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 143: ...Installation Part 17997 Rev 6 March 2011 6 29 Figure 6 9 Installing the CPU Module ...
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Страница 190: ...Chapter 9 Communications and Networking 9 14 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 216: ...Chapter 11 Operating the Hydran 201i System 11 8 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 236: ...Chapter 12 Troubleshooting 12 20 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 244: ...Chapter 13 Maintenance 13 8 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 254: ...Appendix B Mechanical Drawings B 2 Rev 6 March 2011 Part 17997 Figure B 3 1 5 In Adaptor ...
Страница 255: ...Hydran 201Ti Intelligent Transmitter Part 17997 Rev 6 March 2011 B 3 Figure B 4 1 In Adaptor ...
Страница 262: ...Appendix C Functional Block Diagrams C 4 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 282: ...Appendix F Default Values of the Parameters F 4 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 284: ...Appendix G Unit Conversions G 2 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 298: ...Appendix I Glossary I 12 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
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