3
LEDS
*
SWITCHES
IN GROUPS
MUST BE SET
*
*
OFF DCE/ ON DTE
RS232
OFF DTE/ ON DCE
OFF DTE/ ON DCE
OFF DCE/ ON DTE
*
6
5
7
ON
PULL UP
PULL DOWN
OFF 4 WIRE/ ON 2 WIRE
OFF 4 WIRE/ ON 2 WIRE
120
Ω
TERMINATION
38400 BAUD
115200 BAUD
57600 BAUD
OFF 422/ ON 485
OFF 422/ ON 485
*
9
1
NC
2
3
4
10
6
7
8
3
4
5
RED LION CONTROLS
MODEL ICM5
YORK, PA.
9600 BAUD
19200 BAUD
MADE IN U.S.A.
9-26VDC CLASS 2
@ 125mA MAX.
1
2
ON
M2869X
RS485
TXD
RXD
PWR
RXA
7
COMM
485/
RXB
422
TXA
5
6
4
COMM
TXB
PWR
SPLY
+ VDC
2
3
1
SIDE VIEW OF ICM5
TYPICAL RS-232 CONNECTIONS
DIP SWITCH SETTINGS
Top Bank of 10 Switches
Switches 1-5 - BAUD
Select the appropriate baud rate. This
adjusts the time delay for the automatic
RS-485 driver controller. Only one of the
baud switches should be in the ON position.
Switches 6-7 - PULL UP / PULL DOWN
These switches connect 4.7 K
Ω
biasing resistors to the A and B lines of the
485 receiver. To minimize loading of the network, these should only be used if
no other device in the system provides biasing.
Switches 8-9 - OFF 4 WIRE / ON 2 WIRE
These switches can be used to internally jumper the A and B lines of the
RS-485 driver and receiver together. This allows 2-wire operation without the
use of external jumper wires. To use the RJ-11 connector, the ICM5 must be in
2-wire mode. Both switches should be in the same position.
Switch 10 - 120
Ω
TERMINATION
This switch connects a 120
Ω
resistor across the A and B lines of the RS-485
receiver. The use of the resistor prevents signal reflection, or echoing, at high
baud rates, over long distances. This should only be turned on if the ICM5 is
the first, or last, device in a multi-drop network that is experiencing reflection
due to long cable distances.
Bottom Bank of 7 Switches
Switches 1-2 - OFF 422 / ON 485
These switches enable and disable the automatic RS-485 driver control. In
the 422 position, the driver is always enabled, allowing 4-wire full duplex
operation. In the 485 position, the driver is enabled as soon as characters are
received on the RS-232 side. When the RS-485 driver has transmitted the last
character, it waits one character time (at the selected baud rate), and then enters
a high-impedance state. The receiver is also enabled and disabled in a similar
fashion to prevent transmitted characters from being echoed back. This allows
2-wire, half-duplex operation, without the use of handshake lines. Both
switches should be in the same position.
Switch 3 - N/C
No Connection
Switches 4-7 - OFF DCE / ON DTE
These switches configure the RS-232 port to act as a DCE or DTE device.
With all of the switches in the DCE position, pin 2 of the DB-9 connector is the
RS-232 receiver, and pin 3 is the RS-232 transmitter. DTE configures pin 2 as
the transmitter, and pin 3 as the receiver. These switches allow the use of
modem or null-modem cables. All of these switches should be in the DCE or
DTE position. No other combinations are valid.
OFF DTE/ ON DC
E
120
Ω
TERMINA
TIO
N
OFF 422/ ON 485
OFF 422/ ON 485
OFF DCE/ ON DT
E
OFF DCE/ ON DT
E
OFF DTE/ ON DC
E
PULL
DOWN
9600 BAU
D
57600 BAU
D
115200 BAU
D
OFF 4 WIRE/ ON 2 WIRE
38400 BAU
D
19200 BAU
D
OFF 4 WIRE/ ON 2 WIRE
ON
* *
*
* * *
*
6
7
PULL
UP
4
1
2
3
5
ON
4
*
*
*
* *
NC
3
1
10
2
8
9
7
6
5
2
INTERNALLY
JUMPERED
3
5
RX
TX
SIG CO
M
ON
ON
115200 BAU
D
57600 BAU
D
38400 BAU
D
PULL
DOWN
9600 BAU
D
19200 BAU
D
*
* *
* *
PULL
UP
6
5
4
3
7
*
1
2
*
OFF DTE/ ON DCE
OFF DTE/ ON DCE
OFF DCE/ ON DT
E
OFF DCE/ ON DT
E
OFF 422/ ON 485
OFF 422/ ON 485
120
Ω
TERMINA
TIO
N
OFF 4 WIRE/ ON 2 WIRE
OFF 4 WIRE/ ON 2 WIRE
4
**
NC
3
2
1
* *
*
9
8
10
5
6
7
JUMPERED
INTERNALLY
TX
2
SIG CO
M
3
5
RX
TYPICAL RS-422 CONNECTIONS
Notes:
1. Connect shield (drain wire) to earth ground.
2. RS-422 polarity: Terminal “A” is negative with respect to Terminal “B” in the
mark (logic 1) condition.
3
2
38400 BAU
D
9600 BAU
D
19200 BAU
D
*
*
ON
1
*
OFF 4 WIRE/ ON 2 WIRE
OFF 4 WIRE/ ON 2 WIRE
7
4
5
2
3
10
7
8
5
4
PULL
UP
PULL
DOWN
57600 BAU
D
11
5200 BAU
D
12
0
Ω
TERMIN
AT
IO
N
NC
OFF 422/ ON 48
5
OFF 422/ ON 48
5
OFF DCE/ ON DT
E
OFF DCE/ ON DT
E
OFF DTE/ ON DCE
OFF DTE/ ON DCE
*
**
**
9
6
* * * *
6
1
ON
4.7K
4.7K
RX
TX
TRANSMIT DATA
3
RECEIVE DATA
RECEIVE DATA
SIGNAL COMMON
5
6
B
+5V
120
Ω
7
A
TRANSMIT DATA
A
B
4
DEFAULT SETTINGS
BAUD RATE 9600
DCE
2 WIRE \ RS-485
NO TERMINATION
NO PULL-UP OR PULL DOWN
DTE
DCE
TYPICAL RS-485 CONNECTIONS
2
1
3
19200 BAU
D
9600 BAU
D
38400 BAU
D
OFF 4 WIRE/ ON 2 WIRE
OFF 4 WIRE/ ON 2 WIRE
12
0
Ω
TERMIN
AT
IO
N
10
8
9
6
4
5
7
11
5200 BAUD
57600 BAU
D
PULL
DOWN
PULL
UP
7
6
4
3
NC
2
5
1
OFF DTE/ ON DCE
OFF DTE/ ON DCE
OFF DCE/ ON DT
E
OFF DCE/ ON DT
E
OFF 422/ ON 48
5
OFF 422/ ON 48
5
** *
ON
TX/RX
B
*
*
* * *
**
* *
4.7K
ON
SIGNAL COMMON
6
5
A
4.7K
+5V
120
Ω
7
Note:
Connect shield (drain wire)
to earth ground.
Note:
Connect shield (drain wire) to earth ground.
Note:
Connect shield (drain wire) to earth ground.
*
- Application Dependent
*
- Application Dependent
*
- Application Dependent
*
- Application Dependent
