To test RS485 module set switch SB-3 & -4 Closed (ON) to loopback data to the host modem. This test is for RS485 2- wire and 4- wire configurations.
Connect MIUXXXX/485 TXY (+) and TXZ (-) to the embedded controller
RS485
DIAGNOSTICS
RS485 CONNECTION FAILURE
To test RS485 module set switch SB-3 & -4 Closed (ON) to loopback data to the host modem. This test is for RS485 2- wire and 4- wire configurations.
Connect MIUXXXX/485 TXY (+) and TXZ (-) to the embedded controller RS485 connection
MIUXXXX/485 + ------------------- | + RS485 embedded controller |
- | ------------------- - | |
In some applications RS485 | TXY (+) and TXZ (-) may have to be connected |
to RS485 | embedded controller | in the following setup |
MIUXXX/485 + | ----------------- - RS485 embedded controller |
| - ----------------- + | |
CIU Installation, Operation & Diagnostics | Edition: June 17, 2003 |
Page C-1
