1
®
DESCRIPTION
The EC485 converter is an accessory for both the Fireye
®
FLAME-MONITOR™ flame safeguard
control system and the 45FS1 and 45UVFS1 Flame
Signature Scanner
™ controls. The EC485 is an
RS232 to RS485 converter used to perform the following functions:
1.
Customize the operating control messages and lockout alarm messages of the E300 Expansion
Module.
2.
Interface between an IBM compatible PC running the FS700 Communication Software and the
45FS1 and 45UVFS1 Flame
Signature Scanner
to provide remote communications capability.
3.
Interface between an IBM compatible PC running the E720 Communication Software and the
E340 Burner Management Control System to provide remote communications capability.
The EC485 provides the means to directly connect to any device that has RS485 communication
capability.
The EC485 is packaged with an RJ12 telephone jack mounted on a PC board to provide an easy
method to use the ED512 cables to interface to the EP programmers when customizing E300 mes-
sages.
The EC485 also includes a 120 VAC to 12 VDC power supply.
RS-485 Driver Control, RTS / SD Jumper:
The RS-485 side of the converter must be enabled to transmit data, and disabled when not transmit-
ting. Via a jumper on the converter, either
“RTS”
or
“SD”
is selected as the control means to auto-
matically enable and disable the converter.
With
SD
(Send Data) control selected, circuitry within the converter automatically controls the
transmitter by sensing the data on the RS-232 side. This circuitry enables the driver during data
transmission and disables the driver after the last character has been sent.
With
RTS
(Request To Send) control selected, the external software controls the driver by raising
and lowering the Request To Send line on the RS-232 side. Because the RTS timing is not precisely
controlled, this method is not usually suitable for Windows based systems.
EC485
RS232/RS485
CONVERTER
EC-4851
February 6, 2017
