Null Modem & Crossover Ethernet Pin Outs
Table of Contents
Overview:
This article will cover the RS-232 and Ethernet pinout for cross-over cables used in direct connection applications between the device and the PC.
RS-232 - Serial
- Pin 2 is for receiving information, pin 3 is for transmission of data and pin 5 is the ground.
- Requires a Null Modem DB 9 Serial Cable (female to female)
- Pin out:
1. N.C.
2. Receive Data (From PC to ZonePRO)
3. Transmit Data (From ZonePRO to PC)
4. Pulled Hi
5. Ground
6. N.C.
7. RTS (From DriveRack to PC) (Optional)
8. CTS (From PC to DriveRack) (Optional)
9. N.C. Chassis. Shield
Note:
For a minimum configuration cable, you will need Pins: 2,3 and 5.
The ZonePRO is considered a master, so to interface to a PC, the cable should have pins 2 and 3 crossed.
If you are running long cables, it will be helpful to use a shielded cable. Connect the shield to the chassis of the connector at both ends.
Pin-Out view of the required pins in a null-modem cable.
USB Serial Adapters:
If you're in need of a trustworthy USB to Serial adapter, Tripp-Lite and USB Gear are also some trust worthy brands.
If you have a Best Buy near you, they sell one made by Insignia that has been known to work well.
RJ45 - Ethernet
For models that have the Ethernet Port, here's the pin out to make an Ethernet crossover cable.
Pin-Out view of our supplied yellow crossover Ethernet cable.
Table of Contents