FieldServer FS-8700-80 - Manual (Page 30)

McQuay Micro Tech Open Protocol Driver Manual Page 30 of 43
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Appendix B.4. Server Side Configuration – Consecutive Addresses
Some variables have their values stored in two consecutive address locations. When the Client polls for the value it
actually sends two read messages – one for each address. When configuring the Server side, therefore, it is
necessary to define two Map Descriptors for variables which require two consecutive addresses.
Map_Descriptors
Map_Descriptor_Name ,
Data_Array_Name
,
Data_Array_Offset ,
Function ,
Node_Name ,
Address ,
Length
Supply Fan Status , DA_AI_01 , 01 , Passive , Node_A , 1118 , 1
Supply Temp , DA_AI_01 , 02 , Passive , Node_A , 1063 , 1
Space Temp , DA_AI_01 , 03 , Passive , Node_A , 1066 , 1
Control Temp Part 1 , DA_AI_01 , 04 , Passive , Node_A , 1074 , 1
Appendix B.5. Configuring the OPM to enable communication between the FieldServer and McQuay
devices
Appendix B.5.1. Configuring multiple McQuay devices to communicate to a Fi eldServer
without an OPM:
The FieldServer will be wired to a Level 1 Microtech controller at port A. Port B of the Level 1 MicroTech controller
will be connected to the daisy chained Level 2 Microtech controllers. This has been tested with a SCU.
1. Power down the Microtech controller to be configured as Level 1. Set HI and LO rotary switches to “00”.
Power up the unit.
2. Connect the Microtech controller to a PC through Port A (RS-232).
3. Daisy chain other McQuay devices to Port B (RS-485)
Connect FieldServer
to port A of the OPM
(RS-232 or RS-485
depending on the Port
A select)
Connect daisy chained
McQuay devices to
port B of the OPM
Set HI and LO rotary
switches on the OPM
to “00”