Delta AH500 Manual page 290

AH5 00 M od ul e M anua l
The TCP keepalive period by default is set to 30 seconds. D500 is an initial register in which
statuses of data exchanges are stored. Users can enter MODBUS Advance to alter the initial
register.
 Triggering the reading/writing of data
Users can use the instruction TO in ISPSoft to trigger the reading of data from bit devices/word
devices, and the writing of data into bit devices/word devices. (CR#7, CR#8, CR#17, and
CR#18)
CR# Attribute
Triggering the reading
7 R/W
of data through COM1
Triggering the reading
17 R/W
of data through COM2
Triggering the writing of
8 R/W
data through COM1
Triggering the writing of
18 R/W
data through COM2
If users want to continually trigger the reading of data from word devices, they can write 2 into
CR#7. If users wan to trigger the reading of data from word devices once, they can write 1 into
8 - 2 8
Register name
High byte: Reading data from bit devices
Low byte: Reading data from word devices
0: Not triggering it
1: Triggering it once
2: Always triggering it
High byte: Reading data from bit devices
Low byte: Reading data from word devices
0: Not triggering it
1: Triggering it once
2: Always triggering it
High byte: Writing data into bit devices
Low byte: Writing data into word devices
0: Not triggering it
1: Triggering it once
2: Always triggering it
High byte: Writing data into bit devices
Low byte: Writing data into word devices
0: Not triggering it
1: Triggering it once
2: Always triggering it
Description