RLE Falcon EM - Manual (Page 26)

Getting Started User Guide: Falcon FMS
12 970 484-6510 www.rletech.com
2-2.8 Modbus EIA485 Connections
The FMS can function as a Modbus Master or Slave over an EIA485, 2-wire hardware connection. The
EXP-MBCS option is required to allow the FMS to function as a Modbus Master. This option must be set
at the factory for an FMS to have Modbus capabilities.
P4 RJ11
TELCO
P5 RJ45
NETWORK
IOIOI
P3 RS232
COM2
IOIOI
P2 RS232
COM1
SW1
+ - GND
RS485 COM1
IOIOI
COM1 SELECT
K2 RX RX 485
K1 TX TX 232
RELAY COM2 COM1
48
5 T
E
RM
SEL
M
/S
TB5 KEYPAD
TB4
NC NO C
RELAY 1
NC NO C
RELAY 2
1 2 ON
(Female) (Male)
<
N
am
e/
S
la
ve
A
dd
re
ss>
S
hie
ld
TX-
/R
X
-
TX+
/R
X
+
M
odb
us
De
vi
ce
<
N
am
e/
S
la
ve
A
dd
re
ss>
S
hie
ld
TX-
/R
X
-
TX+
/R
X
+
<
N
am
e/
S
la
ve
A
dd
re
ss>
S
hie
ld
TX-
/R
X
-
TX+
/R
X
+
M
odb
us
De
vi
ce
M
odb
us
De
vi
ce
100 Ohm
Termination
Resistor
Switch #1 = On,
Inserts 100 Ohm
Termination Resistor
Figure 2-10: FMS EIA485 Connection
2-2.9 Modbus EIA232 Connections
The FMS can function as a Modbus Master or Slave over an EIA232 hardware connection. The EXP-
MBCS option is required to allow the FMS to function as a Modbus Master. The EIA232 port is configured
as a DTE device.