Hardware manual

Chapter 2 Connection to a PLC
2-34
1.4 Environment Settings
1.4.1 FA-3S Series (Serial Interface Unit)
Item Setting
Communication Device Number 0(DEC)
Data Bits 7 or 8 bits
Baud Rate (bps) 1200, 2400, 4800, 9600 or 19200
Parity Even, Odd or None
Stop Bits
Set to the same setting
as the MICRO/I.
1 or 2 bits
Set the FA Series communication settings using the following switches.
1.4.1 1.PF3S-SIF2/SIF4 settings
Setting Switch No.
Function
OFF ON
1
Parity check Even Odd
2
Parity check Yes No
3
Stop Bits 1 2
SW1 4
Data Bits 8 7
Baud Rate (bps) 9600 4800 2400 1200 600 300 38400 19200
5
OFF ON OFF ON OFF ON OFF ON
6
OFF OFF ON ON OFF OFF ON ON
7
OFF OFF OFF OFF ON ON ON ON
8
Unused Either OK
SW2
Communication mode
All off because used with
standard communication mode.
Module
No.
Module number
From 1 to 7 with no
duplication.
The above settings are the same for both SIF2 and SIF4 except that the maximum
communication for SIF2 is 19200 bps (38400 bps is not possible).
Make the settings for SIF2 and SIF4 so that the total number of bits calculated from Start Bit
(1 bit) + Data Bits + Parity (1 bit if set) + Stop Bits comes to either 10 or 11 bits.
The time taken from power on to reaching the operational state for SIF2 and SIF4 is about
one second when the memory bank capacity is 1k steps, and about four seconds when the
memory bank capacity is 4k steps. Therefore, when the SIF2 or SIF4 will be powered up at
the same time as the MICRO/I, set the Start Time for the MICRO/I to match the memory
bank capacity (the default setting for Start Time is 0).