250
Connector Terminals
Section 5-2
Note
1.
The 32-point Slave is handled as a 16-point input Slave and a 16-point out-
put Slave. The node number of the 32-point Slave must be set to an even
number. If an odd number is input, the odd number less one will be set in
the Slave.
2.
The possible range of node numbers varies with the type of Master and
settings in the Master. Refer to
2-1 Communications Specifications
for de-
tails.
Communications Mode Settings
The following communications modes are set with pin 3 of the DIP switch as
shown below.
Note
Make sure that the communications mode of the Slave is the same as that of
the Master Unit. If the communications modes are not the same, normal com-
munications with the Master Unit will not be possible. The operating status of
the Slave can be verified with LED indicators. Refer to
for
details.
Hold/Clear Outputs for Communications Error
Pin 4 is used to set the output data status when a communications error
occurs, as shown in the following table.
Internal Circuits
SRT2-MD32ML
The following diagram shows the internal circuits for the SRT2-MD32ML.
Pin
3
Communica-
tions mode
Communica-
tions distance
Communica-
tions baud rate
Communica-
tions cycle time
OFF High-speed Com-
munications Mode
100 m max.
750 kbps
0.5 or 0.8 ms
ON
Long-distance
Communications
Mode
500 m max.
93.75 kbps
4.0 or 6.0 ms
Pin 4 (HOLD)
Output setting
OFF
Clear output status.
ON
Maintain output status.
Inter
nal circuitr
y
Photocoupler
Photocoupler
ST
