Connecting To The Diagnostic Port; Diagnostic Port Connector Pinout - Proconx GCP-MG User Manual

Connecting to the diagnostic port

The device's second RS-232 interface is used as a diagnostic port and only active after
power-up of the device. It allows configuration of the IP settings and reset of the settings
to factory defaults via a terminal program.
The Diagnostic port connector is a male 9-pin D-sub type located at the bottom side
of the mounted unit. It has industry standard EIA-574 data terminal equipment (DTE)
pinout as shown in the following table and picture:
Pin
1
1
6
2
3
4
5
6
7
8
9
Table 3.6: Diagnostic port connector pinout
• Maximum cable length is 15 m (50 ft) or a length equal to a line capacitance of 2500
pF, both at the maximum standard bit rate of 20 kbps. If operating at higher bit rates
the maximum cable length drops to 3 m (10 ft) at a bit rate of 57.6 kbps.
• To assure a high degree of electromagnetic compatibility and surge protection the
RS-232 cable should shielded. The shield shall be connected to an external chassis
ground at the either or both ends, depending on the application.
• The shield must not be connected to the GND pin.
To connect the GCP-MG to a PC (Personal Computer) or any other device with data
terminal equipment (DTE) pinout you need a null-modem or cross-over cable.
UMGCPMG-2201
Signal Function
NC
RXD Receive data
TXD Transmit data
NC
GND Signal ground
NC
NC
NC
NC
Installation
Direction
in
out
15