Table of Contents
Advertisement
SECTION 1 Communications Methods
● Wiring Diagram
Host computer
Example:
Personal compuer
RS-232C
RS-232C/RS-485
Converter
■ Communications Parameters
Node number
Communications baud rate
Communications data length
Stop bits
Parity
4
Host computer: RS-485
Signal
FG
+
−
SG
Shield
Note: Refer to the operation manual for the RS-232C/RS-485
Converter for wiring between the Converter and host computer.
Communications are performed with an external host computer. The
communications parameters that can be set are listed in the following
table.
Note: Refer to the ZEN Programmable Relay Version 2 Operation
Manual (Cat. No. Z211) for other parameters.
Item
Display
NODE NO
COM SPEED
DATA BIT
STOP BIT
PARITY
• Node Number
For communications with a host computer, set a node number for each
ZEN so that it can be recognized by the host computer. The node
numbers can be set from 00 to 99.
Note: The same node number cannot be set for more than one ZEN. If
duplicate node numbers are set, correct operation will not be
possible.
• Communications Baud Rate
This parameter sets the baud rate for communications with the host
computer. The baud rate can be set to any of the following:
4,800 bps, 9,600 bps, or 19,200 bps.
RS-485
Terminal
B (+)
−
A (
)
Terminator:
ZEN
120 Ω
End node
(1/2 W)
RS-485
Terminal
B (+)
−
A (
)
Use a terminator of 120 Ω (1/2 W).
Shield
Set values
00 or 01 to 99
4800, 9600, or 19200
7 or 8
1 or 2
None, even, or odd
ZEN-10C4AR-A-V2
ZEN-10C4DR-D-V2
Signal
Comm.
+
RS-485 (
)
terminals
−
RS-485 (
)
Signal
End node
+
RS-485 (
)
comm.
−
terminals
RS-485 (
)
Default
Unit
settings
1
---
9600
bps
7
bit
2
bit
Even
---
Advertisement
Table of Contents
