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165
Remote Terminals
Section 5-1
Indicators
The following table shows the meaning of the indicators.
DIP Switch
The DIP switch is located on the left side of the Transistor Remote Terminal,
under the cover. Always turn OFF the Slave before changing DIP switch set-
tings.
Note
1.
Always turn OFF the Slave before changing DIP switch settings.
2.
In the SRT1 Series, pin 2 must always be left OFF. Otherwise, the Unit may
not function correctly.
Hold/Clear Outputs for Communications Error
Pin 1 is used to set the output data status when a communications error
occurs, as shown in the following table.
Communications Mode Settings (SRT2 Series Only)
The following communications modes are set with pin 2.
The communications mode settings using pin 2 only apply to the SRT2-series
Slaves and cannot be used with the SRT1-series Slaves, which operate in
High-speed Communications Mode at all times.
Indicator
Status
Meaning
PWR (green)
ON
The communications power supply is ON.
OFF
The communications power supply is OFF.
COMM (yellow)
ON
Normal communications
OFF
A communications error has occurred or the Unit is in
standby status.
ERR (red)
ON
A communications error has occurred.
OFF
Normal communications or the Unit is in standby sta-
tus.
0 to 3 (4 outputs)
0 to 7 (8 outputs)
0 to 15 (16 outputs)
(yellow)
ON
The corresponding output is ON.
OFF
The corresponding output is OFF or the Unit is in
standby status.
Hold/Clear outputs for communications error
Communications mode setting (SRT2 Series)
or Reserved (Always OFF) (SRT1 Series)
Node number setting
Pin 1 (HOLD)
Output setting
OFF
Clear output status.
ON
Maintain output status.
Pin 2
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