SnapCap is an accessory which converts RS-232 port on a 9-pin sub-D connector into an isolated half or full duplex (user-selectable via switch) RS-485 port on a 5-pin, 3,5mm pich, COMBICON connector.

General setup

You can follow this diagram to connect the RS-485 cable to the SnapCap:           Where:

• B = Data-
• A = Data+
• G = GND

Setup for M110

Firstly, connect the RS-485 in the SnapCap as shown in General Setup and connect the SnapCap to the RS-232 input in the M110 device. Finally, you are able to communicate via RS-485 with the device.

Setup for E210

Firstly, download the file snapcap.sh and copy it in /etc/init.d/ (view Copy files with SCP) Then, enter via SSH to the router (view SSH access) and execute the following code:

chmod u+x /etc/init.d/snapcap.sh
/etc/init.d/snapcap.sh enable

Reboot the device, connect the RS-485 in the SnapCap as shown in General Setup and connect the SnapCap to the RS-232 input in the E210 device. Then, go to Services>Serial and configure the Data Send Configuration as shown in the image bellow. Finally, setup the Serial and TCP Client as shown in the pictures bellow and you will be able to communicate from one channel to the other with the SnapCap working on the device.