38
ZP900 Post Scales User Instructions
Outline dimensions and connections
8.1.2 Connecting a 2nd Remote Display
To connect a 2nd Remote Display requires connecting from Com2 of the ZP900 to
Com1 of the 2nd Remote Display.
For the 2nd Remote Display to function the ZP900 will need to be configured for Serial
port 2 (9600, 8, n, 1) and Protocol 2 (SMA to Port 2).
2 wires will need to be attached to TB3 pin 1 (GND) and pin 6 (+5V) on the ZP900
indicator.
In order to connect to a PC terminal using a serial RS232 interface when two remote
displays are already connected to the ZP900 serial ports, you can use Com 2 on either
remote display and refer to the dip switch settings to select from an available protocol.
Wiring instructions - 2nd Remote Display to Indicator
Remote Display Serial Port
Indicator Serial Port
TB3 Pin 1 - Blue (GND)
TB3 Pin 1 - Blue (GND)
TB3 Pin 2 - White/Orange (TX1)
TB3 Pin 5 - White/Orange (RX2)
TB3 Pin 4 - White/Blue (RX1)
TB3 Pin 3 - White/Blue (TX2)
TB3 Pin 6 - Orange (+5V)
TB3 Pin 6 - Orange (+5V)