Yokogawa JUXTA VJ Series Limit Alarms - Manual (Page 10)

1-2
<1. Setup >
IM 77J01J11-01E
1.2 Notes on Setting Parameters
This section describes the setting parameters for using the communication func-
tions and their setting ranges.
CAUTION
The details of VJ Series communication functions need to be the same as those of the
communication functions of the higher-level device to be connected. Check the communi-
cation parameters of the higher-level device first, then set up those of the VJ Series using
the Handy Terminal or setting tool (VJ77).
Table 1-1 Parameters to be Set for Communication Functions
Parameter Name
MODBUS communication ASCII mode
RTU mode
Protocol selection Without sum check
With sum check PC link communication
Setting Range
Communication rate
Parity
Stop bit
Data length
Address
PROTOCOL
Symbol
BAUD RATE
PARITY
STOP BIT
DATA LEN
ADDRESS
1200, 2400, 4800, and 9600
NONE, EVEN, ODD
1, 2
7 , 8 (*1)
1 to 99
Ladder Ladder communication
PC link communication
without sum check
Default
9600
EVEN
1
8
1
010201E.EPS
*1: When "Ladder" is selected in protocol selection, it is fixed to "8."
When "ASCII mode" is selected for MODBUS communication, it is fixed to "7."
When "RTU mode" is selected, it is fixed to "8."
●
Protocol selection (PROTOCOL)
Set the communication protocol identical to that of the higher-level device to be connected.
3rd Edition : Oct. 15, 2007-00