MX 16
ANALOG AND DIGITAL CONTROLLER
USER GUIDE
NP16EN
Revision: A.0
43
11
RS485 Digital Output
The
MX 16 units using the RS485 Modbus option are equipped with a communication card (code
6451680), which is affixed to the motherboard. This card generates a RS485 output in
Modbus
RTU format.
Card description
Figure 23: RS485 card
Rep.
Function
A.
Operating LEDs. The
Rx LED lights up when a data thread is received. The Tx LED
indicates that the card has power and turns off when data is being transmitted out.
B.
Connection terminal:
A = Tx or +RS485
B = Rx or –RS485
C.
End Of Line (EOL) resistance. Set the switch to the EOL position for the unit that is the
last module in the RS485 network. For other units, set the switch to NO EOL.
The RS485 output can be configured using unit menu
2.4 Program >RS485 Port (see page 26).
Summary of Contents for Oldham MX 16
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