Bell & Gossett S14333 Technologic 5500 Series ZoneSav Controller - Manual (Page 17)

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3.3.10.2 Metasys N2
From the Communication Setup Menu, shown in sec-
tion 3.3.10, press 2 and ENTER to get to the Metasys
N2 screen shown below.
Metasys N2
9600, 8, 1, 1, N. VND
Node = #
SP Ovrd: ? Y/N
Exit ? Y/N
The first line confirms setup for the Johnson Controls
N2 protocol. The second line defines the 9600 bps
baud rate, 8 bit data packets, 1 stop bit, 1 start bit
and no parity. To return to the Communications
Setup Menu, shown in section 3.3.10, press YES and
ENTER. To edit the fields, press NO and ENTER.
Table 25 gives a description of the Metasys N2
variables.
3.3.10.3 Modbus
From the Communication Setup Menu, shown in sec-
tion 3.3.10, press 3 and ENTER to get to the Modbus
screen shown below.
Modbus
9600, 8, 1, 1, N RTU
Node = #
SP Ovrd: ? Y/N
Exit ? Y/N
The first line confirms setup for Modbus protocol.
The second line defines the 9600 bps baud rate, 1
stop bit, 1 start bit, and no parity. To return to the
Communications Setup Menu, shown in section
3.3.10, press YES and ENTER. To edit the fields,
press NO/0 and ENTER. Table 26 gives a description
of the Modbus variables.
3.3.10.4 BACnet/IP
From the Communication Setup Menu, shown in sec-
tion 3.3.10, press 4 and ENTER to get to the
BACnet/IP screen shown below.
IP Address:
###. ###. ###. ###
Subnet:
###. ###. ###. ###
The BACnet device IP address and Subnet Mask are
provided by building management system. Press
NEXT SCREEN and the display will show:
Start Delay = ## Sec
Setpoint Ovrd: ?(Y/N)
Save IPAdd: ?(Y/N)
OK: ? (Y/N)
To return to the Communications Setup Menu, shown
in section 3.3.10, press YES and ENTER. To edit the
fields, press NO and ENTER. Table 27 gives a
description of the BACnet/IP variables.
For additional information concerning the above pro-
tocols, consult the Bell & Gossett Tech 500 Serial
Communications instruction manual (part number
S13654).
There may have been additional protocols added to
the communication setup menu, contact your Bell &
Gossett representative concerning additional proto-
cols and setups.
Variable Description Default Value Range Field Value
Node Obtain the node number from the manufacturer that 1 0-255
supplied the device that will communicate with the
Technologic Controller
SP Ovrd Select “Y” to allow the setpoints to be overwritten N Y/N
through the communications port
Table 25: Metasys N2 Variables
Variable Description Default Value Range Field Value
Node Obtain the node number from the manufacturer that 1 255
supplied the device that will communicate with the
Technologic Controller
SP Ovrd Select “Y” to allow the setpoints to be overwritten N Y/N
through the communications port
Table 26: Modbus Variables
Variable Unit Description Default Value Range Field Value
Start Delay Seconds Time delay to start the BACnet interface 10 0-999
Set Point N/A Select YES for the external device to override the local N Y/N
Ovrd setpoint data
Save IP N/A Select YES to save IP address (restarts) N Y/N
Add
Table 27: BACnet/IP Variables