AB Quality 2706-P4 Series Installation Instructions Manual page 16

Right-end view
Serial device hole
plug/opening
Power connection
4. If the sign is to be used with serial communications, remove one
or both of the hole plugs from the lowest holes on the right end
of the sign case. Otherwise, proceed to Step 6.
TB1 can be used for incoming serial connection for
TIP
RS-232 or RS-485. The full pinout diagram is shown
below:
1. GND
2. +5V
3. RS-232 TX
4. RS-232 RX
9. Connect the incoming serial wires per pinout.
TB1 can be used for incoming RS-485 or RS-232 serial
connection. They cannot be connected at the same time.
RS-485 is recommended to reduce undesirable electrical
interference.
1. NC
2. NC
3. NC
4. NC
InView Marquee Message Display
Ground
Line
Neutral
GREEN
(Hot)
w/
(Line 2):
208 - 240 VAC INPUT
TB1 - Full
5. RS-485(+)
6. RS-485(-)
7. NC
8. SHIELD
TB1 - RS-485
5. RS-485(+)
6. RS-485(-)
7. NC
8. SHIELD
Publication 2706-IN006E-EN-P
15