Delta AH500 - 11.1.4 Related Special Auxiliary Relays and Special Data Registers

Chapter 11 Convenient Functions
11-31
11.1.4 Related Special Auxiliary Relays and Special Data Registers
1. Descriptions of the related special auxiliary relays:
Device
Name
R/W
Description
SM1584
Enabling the function of executing a
PLC Link
R/W
Executing a PLC Link
OFF: The function of executing a PLC Link
is disabled. (Default)
ON: The function of executing a PLC Link
is enabled.
SM1585
Connecting to the slave stations
automatically/manually
R/W
Using user-defined PLC Link flags
*1
OFF: The user-defined PLC Link flags are
not used.
ON: The user-define PLC Link flags are
used.
SM1586
Executing a PLC Link in the
automatic mode
R/W
PLC Link in the automatic
OFF: Not executing a PLC Link in the
automatic mode (Default)
ON: Executing a PLC Link in the automatic
mode
SM1587
Executing a PLC Link in the manual
mode
R/W
PLC Link in the manual mode
OFF: Not executing a PLC Link in the
manual mode (Default)
ON: Executing a PLC Link in the manual
mode
SM1588
Enabling the function of detecting
the slave stations automatically
R
Detecting the slave stations
OFF: The master does not detect the
slaves.
ON: The master station detects the slave
stations.
SM1589 PLC Link error flag R
If SM1586 and SM1587 are ON, SM1589
will be ON.
OFF: No error occurs.
ON: An error occurs.
SM1590 A device address is incorrect. R
If a device address is incorrect, SM1590 will
be ON.
OFF: A device address is incorrect.
ON: No device address is incorrect.
SM1591 Timeout R
I
f there is a communication timeout, SM1591
will be ON.
OFF: There is no communication timeout.
ON: There is a communication timeout.
SM1592
The number of polling cycles in a
PLC link is incorrect.
R
If the value in SR1338 is 0, SM1592 will be
ON.
OFF
: The number of times the master station
polls the slave station is correct.
ON: The number of times the master station
polls the slave stations is incorrect.
SM1593
Standard Modbus communication
protocol/AH500 Modbus
communication protocol
R/W
Selecting a communication protocol
OFF: Standard Modbus communication
protocol (Default)
ON: AH500 Modbus communication protocol
SM1594
Detecting the slave stations
automatically
R/W
The master station will detect the slave
stations automatically o
nly if the execution of
the PLC Link stops.
OFF: The master station finishes detecting
the slave stations, or waits to detect
the slave stations. (Default)