FUTEK IPM600 (D610) Digital Display - Manual (Page 107)

15.RS-485 COMMUNICATION INTERFACE(OPTION)
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15. RS-485 COMMUNICATION INTERFACE(OPTION)
15-1. Communication Specifications
- Specifications
Signal level Based on RS-485
Transmitting distance Approx 1km
Transmitting method Asynchronous Full duplex
Transmitting speed 1200 2400 4800 9600 or 19200bps Selectable
Bit configuration Start 1bit
Character length 7 or 8bits Selectable
Stop 1 or 2bits Selectable
Parity None,Odd or Even Selectable
Terminator CR+LF/CR Selectable
Code ASCII
- Connector Pin Assignment
15-2. RS-485 connection
1.Connection of transmitting and receiving lines
4-wire connection
Set the communications mode of the F371 to “4-wire.”
Connect the “SD” (sending side) of the equipment on the other end (master), such as a
programmable controller, to “RD” (receiving side) of the F371 (slave), and “RD” of the
master to “SD” of the F371.
MARK OFF
V A -V B < -0.2V
SPACE ON
V A -V B > 0.2V
A
B
A
B
SD
RD
SG