Set up Network
The address of the network sensors are 1-64 so it is normal to have the FMC-60 main
panel address above this, the default address is 201. Using ENGINEERS menu 27 (set
up network), the address of the FMC-60 can be changed using UP (1) and DOWN (5)
buttons. Pressing SELECT (3) saves this address and presents a view of all other
devices connected to the FMC-60.
Using the UP (1) and DOWN (5) buttons each address in the system can be viewed and
if a device exists, a letter will appear to tell you what it is. For instance, if a repeater is
detected, the letter ʻRʼ will appear and a Y or N as well, N means that you are not
currently connected to the repeater. Pr (4) will change the N to a Y to indicate
connection and - (2) will change a Y to an N to say not connected.
An ʻSʼ shows that a sounder, relay device is present on the network. ʻCʼ represents a can
sensor.
The Y indicates to the FMC-60 that text and LED data should be sent to a repeater and
also that button presses on that repeater should be accepted by this FMC-60.
Pressing SELECT (3) again return to the ENGINEERS menu.
Using ENGINEERS menu 34, the baud rate used by Modbus can be changed.
Pressing UP (1) and DOWN (5) will alter the baud rate. Pressing SELECT (3) returns you
to the ENGINEERS menu.
The Modbus protocol for the data packets received from a master is usually a request for
specific data to be sent back to the master. This protocol is covered in a separate
document known as MODBUS RTU protocol. In its simple form, the master will ask for
the data kept in any of the 250 registers located in the FMC-60 system and the FMC-60
will reply with the requested register data.
These registers are 16 bit numbers representing 0 to 65535 in decimal.
A view of these registers can be seen by using USER menu 1. UP (1) and DOWN (5) will
display different register numbers with the data. It is useful when first setting up the
system.
Additionally, USER menu 4 allows you to view the Modbus data packets received and
transmitted. Again, this is used when first setting up the system and can diagnose
requests and responses.
See FMC-60 Modbus register definitions in the appendix.
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