25: DATA LINK COMMUNICATION
« FC4A MICROSMART USER’S MANUAL » 25-3
Data Register Allocation for Transmit/Receive Data
The master station has 12 data registers assigned for data communication with each slave station. Each slave station has 12
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 D912 through D1271 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
D900-D905 Transmit data to slave 1
Slave 17
D1092-D1097 Transmit data to slave 17
D906-D911 Receive data from slave 1 D1098-D1103 Receive data from slave 17
Slave 2
D912-D917 Transmit data to slave 2
Slave 18
D1104-D1109 Transmit data to slave 18
D918-D923 Receive data from slave 2 D1110-D1115 Receive data from slave 18
Slave 3
D924-D929 Transmit data to slave 3
Slave 19
D1116-D1121 Transmit data to slave 19
D930-D935 Receive data from slave 3 D1122-D1127 Receive data from slave 19
Slave 4
D936-D941 Transmit data to slave 4
Slave 20
D1128-D1133 Transmit data to slave 20
D942-D947 Receive data from slave 4 D1134-D1139 Receive data from slave 20
Slave 5
D948-D953 Transmit data to slave 5
Slave 21
D1140-D1145 Transmit data to slave 21
D954-D959 Receive data from slave 5 D1146-D1151 Receive data from slave 21
Slave 6
D960-D965 Transmit data to slave 6
Slave 22
D1152-D1157 Transmit data to slave 22
D966-D971 Receive data from slave 6 D1158-D1163 Receive data from slave 22
Slave 7
D972-D977 Transmit data to slave 7
Slave 23
D1164-D1169 Transmit data to slave 23
D978-D983 Receive data from slave 7 D1170-D1175 Receive data from slave 23
Slave 8
D984-D989 Transmit data to slave 8
Slave 24
D1176-D1181 Transmit data to slave 24
D990-D995 Receive data from slave 8 D1182-D1187 Receive data from slave 24
Slave 9
D996-D1001 Transmit data to slave 9
Slave 25
D1188-D1193 Transmit data to slave 25
D1002-D1007 Receive data from slave 9 D1194-D1199 Receive data from slave 25
Slave 10
D1008-D1013 Transmit data to slave 10
Slave 26
D1200-D1205 Transmit data to slave 26
D1014-D1019 Receive data from slave 10 D1206-D1211 Receive data from slave 26
Slave 11
D1020-D1025 Transmit data to slave 11
Slave 27
D1212-D1217 Transmit data to slave 27
D1026-D1031 Receive data from slave 11 D1218-D1223 Receive data from slave 27
Slave 12
D1032-D1037 Transmit data to slave 12
Slave 28
D1224-D1229 Transmit data to slave 28
D1038-D1043 Receive data from slave 12 D1230-D1235 Receive data from slave 28
Slave 13
D1044-D1049 Transmit data to slave 13
Slave 29
D1236-D1241 Transmit data to slave 29
D1050-D1055 Receive data from slave 13 D1242-D1247 Receive data from slave 29
Slave 14
D1056-D1061 Transmit data to slave 14
Slave 30
D1248-D1253 Transmit data to slave 30
D1062-D1067 Receive data from slave 14 D1254-D1259 Receive data from slave 30
Slave 15
D1068-D1073 Transmit data to slave 15
Slave 31
D1260-D1265 Transmit data to slave 31
D1074-D1079 Receive data from slave 15 D1266-D1271 Receive data from slave 31
Slave 16
D1080-D1085 Transmit data to slave 16
—
D1086-D1091 Receive data from slave 16
Data Data Register Transmit/Receive Data
Slave Station Data
D900-D905 Transmit data to master station
D906-D911 Receive data from master station
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