Specifications

Network interfaces 21
Networking Alpha Signs (9700-0112C) October 8, 2003
Converter Box III (pn 1088-1111)
Description
Item Description
A
RS232 TXD indicator. When lit, indicates that the unit is transmitting data through the
RS232 plug and receiving data through one of the RS485 connections.
B
RS232 RXD indicator. When lit, indicates that the unit is receiving data through the
RS232 plug and transmitting data through one of the RS485 connections.
C Power indicator. When lit, indicates that the unit has power.
D
RS485 jack. Connects a single Alpha sign to the unit. For multiple sign networking, use
the RS485 connector block.
E
Termination selector.
Set to Terminated if the Converter Box is at one end of a string of signs.
Set to Unterminated if the Converter Box is in the middle of a string of signs.
See “Appendix B—End-of-line termination” on page 50 for more information on
terminating signs.
F RS485 connector block. Connects multiple Alpha signs to a network.
G RS232 plug. Connects to a PC’s RS232 port.
H Power plug. Supplies 9 VAC to the unit.
1 = DCD
2 = RXD
3 = TXD
4 = DTR
5 = Signal GND
6 = DSR
7 = RTS
8 = CTS
9 = not connected
15234
9678
RS232 pinout
1 = not connected
2 = RS485(+)
3 = SHIELD
4 = not connected
5 = RS485(-)
51432
RS485 pinout
6
Back
Front
A
B
C
D
E
FG
H
C
S
S S
C=Converter Box
S=Sign
T=E-O-L terminator
C=Converter Box
S=Sign
T
S
S C S
T=E-O-L terminator
S=Sign
C=Converter Box
T
T