FieldServer FS-8700-80 - Manual (Page 9)

McQuay Micro Tech Open Protocol Driver Manual Page 9 of 43
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1.2.4.2 With no level 3 devices
If a FieldServer gateway device is applied to a site that has an existing “MicroTech network” (meaning that it has
custom MicroTech Monitor software for that site and an NMP Panel) with only level 2 controllers and no level 3
devices (such as Unit Vents or WSHPs), changes are required as follows:
The checksums in the NMP’s application code must be corrupted so that the NMP no longer functions as a
Network master Panel. The FieldServer device connects to the “A” port of the NMP.
No network wiring changes are necessary
1.2.5 Existing MicroTech Open Protocol network
If a FieldServer gateway device is applied to a site that has an existing “Open Protocol network”, the following
assumptions are made:
The site has either an OPM Panel or some other level 1 MicroTech controller that is functioning as an
OPM.
Any Unit Vents or WSHPs in the network are already running the proper “Level 2” application code
required for an “Open Protocol” network.
No network wiring changes are necessary.
See Figure 7 for details
1.2.6 Replacing a BACdrop Gateway panel
1.2.6.1 Connected a Single MicroTech unit controller
When a FieldServer device is used to replace a BACdrop panel that has been connected to one MicroTech unit
controller, some re-wiring is necessary. The RS-485 network terminals of the BACdrop panel are connected to the
“B” Port of the MicroTech controller, but the FieldServer connects to the “A” port of the MicroTech controller. The
unit controller will be a level 2 device with a Comm Port Configuration of “L2 TTY/Slave”. MicroTech Level 2
devices must have an address with a non-zero value to the left of the decimal point and "00" to the right of the
decimal point (for example, 01.00). For a level 2 device, the left side (the non-zero portion) of the address is set
with the controller's rotary hex switches.
1.2.6.2 Connected to Multiple MicroTech unit controllers
When a FieldServer device is used to replace a BACdrop panel that has been connected to multiple MicroTech unit
controllers with no Level 1 supervisory panel such as an RMC, CSC, or RMS, a Level 1 device must be added. If the
unit controllers are 200 Series MicroTech, this can be accomplished by re-configuring one of the unit controllers to
be Level 1. The alternative to re-configuring one of the existing unit controllers to be a Level 1 device is to add a
level 1 device such as an OPM, RMC, CSC, or RMS, but this may be difficult because all of these control panels are
obsolete and no longer available. For a typical BACdrop network, the BACdrop panel is the level 1 controller and
the unit controllers are level 2 controllers. See Figures 4 and 6 for details.