Rs485 Interface; Hardware Interface; Protocol - MICRO-EPSILON capaNCDT 6114 Operating Instructions Manual

RS485 Interface

5. RS485 Interface
The DT6124 series controllers have an RS485 interface.
You can read out the measurements in digital form via the RS485 interface.
MICRO-EPSILON can help you with the MEDAQLib driver, which contains all commands for the capaNCDT 6120. You can download
the link directly via the following link:http://www.micro-epsilon.de/link/software/medaqlib .
You can also use the IF1032/ETH interface converter, see
net.
5.1

Hardware Interface

The interface is a half-duplex RS485 interface (1 common line pair for Rx and Tx).
Baud rate: 230400 (other baud rates can be set)
Data format: 1 start bit, 8 data bits, 1 parity bit (even), 1 stop bit
RS485 address: 126 (can be set between 1 and 126)
There is no RS485 terminating resistor in the controller. In RS485 lines longer than 5 meters, a 120 Ohm terminating resistor is re-
quired between the A and B line at both the bus start and end.
5.2

Protocol

The capaNCDT 6120 acts like an RS485 slave. As it is a half-duplex protocol, only the master can initiate a communication. Each
device on the RS485 bus requires its own RS485 address. The master sends a request with an address to the bus, and only the slave
with this address can answer the request.
capaNCDT 61x4
Chap. A 1, for configuration and for reading out the measurements via Ether-
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