21: DATA LINK COMMUNICATION
OPENNET CONTROLLER USER’S MANUAL 21-3
Data Register Allocation for Transmit/Receive Data
The master station has 20 data registers assigned for data communication with each slave station. Each slave station has 20
data registers assigned for data communication with the master station. When data is set in data registers at the master sta-
tion assigned for data link communication, the data is sent to the corresponding data registers at a slave station. When data
is set in data registers at a slave station assigned for data link communication, the data is sent to the corresponding data
registers at the master station.
Master Station
If any slave stations are not connected, master station data registers which are assigned to the vacant slave stations can be
used as ordinary data registers.
Slave Station
Slave station data registers D7020 through D7619 can be used as ordinary data registers.
Slave
Station
Number
Data Register Transmit/Receive Data
Slave
Station
Number
Data Register Transmit/Receive Data
Slave 1
D7000-D7009 Transmit data to slave 1
Slave 17
D7320-D7329 Transmit data to slave 17
D7010-D7019 Receive data from slave 1 D7330-D7339 Receive data from slave 17
Slave 2
D7020-D7029 Transmit data to slave 2
Slave 18
D7340-D7349 Transmit data to slave 18
D7030-D7039 Receive data from slave 2 D7350-D7359 Receive data from slave 18
Slave 3
D7040-D7049 Transmit data to slave 3
Slave 19
D7360-D7369 Transmit data to slave 19
D7050-D7059 Receive data from slave 3 D7370-D7379 Receive data from slave 19
Slave 4
D7060-D7069 Transmit data to slave 4
Slave 20
D7380-D7389 Transmit data to slave 20
D7070-D7079 Receive data from slave 4 D7390-D7399 Receive data from slave 20
Slave 5
D7080-D7089 Transmit data to slave 5
Slave 21
D7400-D7409 Transmit data to slave 21
D7090-D7099 Receive data from slave 5 D7410-D7419 Receive data from slave 21
Slave 6
D7100-D7109 Transmit data to slave 6
Slave 22
D7420-D7429 Transmit data to slave 22
D7110-D7119 Receive data from slave 6 D7430-D7439 Receive data from slave 22
Slave 7
D7120-D7129 Transmit data to slave 7
Slave 23
D7440-D7449 Transmit data to slave 23
D7130-D7139 Receive data from slave 7 D7450-D7459 Receive data from slave 23
Slave 8
D7140-D7149 Transmit data to slave 8
Slave 24
D7460-D7469 Transmit data to slave 24
D7150-D7159 Receive data from slave 8 D7470-D7479 Receive data from slave 24
Slave 9
D7160-D7169 Transmit data to slave 9
Slave 25
D7480-D7489 Transmit data to slave 25
D7170-D7179 Receive data from slave 9 D7490-D7499 Receive data from slave 25
Slave 10
D7180-D7189 Transmit data to slave 10
Slave 26
D7500-D7509 Transmit data to slave 26
D7190-D7199 Receive data from slave 10 D7510-D7519 Receive data from slave 26
Slave 11
D7200-D7209 Transmit data to slave 11
Slave 27
D7520-D7529 Transmit data to slave 27
D7210-D7219 Receive data from slave 11 D7530-D7539 Receive data from slave 27
Slave 12
D7220-D7229 Transmit data to slave 12
Slave 28
D7540-D7549 Transmit data to slave 28
D7230-D7239 Receive data from slave 12 D7550-D7559 Receive data from slave 28
Slave 13
D7240-D7249 Transmit data to slave 13
Slave 29
D7560-D7569 Transmit data to slave 29
D7250-D7259 Receive data from slave 13 D7570-D7579 Receive data from slave 29
Slave 14
D7260-D7269 Transmit data to slave 14
Slave 30
D7580-D7589 Transmit data to slave 30
D7270-D7279 Receive data from slave 14 D7590-D7599 Receive data from slave 30
Slave 15
D7280-D7289 Transmit data to slave 15
Slave 31
D7600-D7609 Transmit data to slave 31
D7290-D7299 Receive data from slave 15 D7610-D7619 Receive data from slave 31
Slave 16
D7300-D7309 Transmit data to slave 16
—
D7310-D7319 Receive data from slave 16
Data Data Register Transmit/Receive Data
Slave Station Data
D7000-D7009 Transmit data to master station
D7010-D7019 Receive data from master station
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