4
Module descriptions
NOTE:
Always remove power from a module before changing wiring or jumper settings.
Failure to do so may damage the equipment.
NOTE:
Parts are not serviceable on any of the modules. In case of malfunction, return to the manufacturer.
CPU Module
NOTE:
Only one CPU Module can be used at a time. See “Operating Modes” on page 9.
Item
Name
Description
A
Module Top
The internal PCB is attached to the Module Top.
B
Release Button
Depress each Release Button to remove the Module Bottom.
C
Module Bottom
Can be removed to expose internal PCB.
D
Intermodule Connector
Used to pass power and signals between modules. When attached to a conductive DIN rail, the
rail serves as the CHASSIS GND for all modules connected to the DIN rail.
E
DIN rail latch
Used to attach the module to a DIN EN 5Ø Ø22 mounting rail.
F
Serial Output
Shielded RS485 output
to one or more ALPHA signs.
Because of the signal protection afforded by shielding, this is the recommended
way of connecting ALPHA signs to the CPU Module.
To connect ALPHA signs, see “Creating messages using ALPHA Messaging software” on
page 23.
PWR
L2
DISPLAY
SERIAL COM
L1
(RS 232/485)
(RS 232)
Side view
Front view
D
B
B
E
A
F
G
H
I
C
J
B
B
D
L1
L2
PWR
(R
SHLD (Shield)
GND
(–) RS485
(+) RS485
AWG 26 – 14
( Ø.14 – Ø.25
❏
)
For
shielded RS485 output
, use SHLD
with (–) RS485 and (+) RS485.
