IDEC MicroSmart - Manual (Page 413)

25: D ATA L INK C OMMUNICATION
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Data Link Communication between Master and Slave Stations
The master station has 6 data registers assigned to transmit data to a slave station and 6 data registers assigned to receive
data from a slave station. The quantity of data registers for data link can be selected from 0 through 6 using
WindLDR . The
following examples illustrate how data is exchanged between the master and slave stations when 2 or 6 data registers are
used for data link communication with each of 31 slave stations.
Example 1: Transmit Data 2 Words and Receive Data 2 Words
Example 2: Transmit Data 6 Words and Receive Data 6 Words
Master Station
D8069 Communication Error
D900 - D901 Transmit Data
D906 - D907 Receive Data
D8070 Communication Error
D912 - D913 Transmit Data
D918 - D919 Receive Data
D8071 Communication Error
D924 - D925 Transmit Data
D930 - D931 Receive Data
D8072 Communication Error
D936 - D937 Transmit Data
D942 - D943 Receive Data
D8098 Communication Error
D1248 - D1249 Transmit Data
D1254 - D1255 Receive Data
D8099 Communication Error
D1260 - D1261 Transmit Data
D1266 - D1267 Receive Data
Slave Stations
D8069 Communication Error
Slave Station 1 D900 - D901 Transmit Data
D906 - D907 Receive Data
D8069 Communication Error
Slave Station 2 D900 - D901 Transmit Data
D906 - D907 Receive Data
D8069 Communication Error
Slave Station 3 D900 - D901 Transmit Data
D906 - D907 Receive Data
D8069 Communication Error
Slave Station 4 D900 - D901 Transmit Data
D906 - D907 Receive Data
D8069 Communication Error
Slave Station 30 D900 - D901 Transmit Data
D906 - D907 Receive Data
D8069 Communication Error
Slave Station 31 D900 - D901 Transmit Data
D906 - D907 Receive Data
Master Station
D8069 Communication Error
D900 - D905 Transmit Data
D906 - D911 Receive Data
D8070 Communication Error
D912 - D917 Transmit Data
D918 - D923 Receive Data
D8071 Communication Error
D924 - D929 Transmit Data
D930 - D935 Receive Data
D8072 Communication Error
D936 - D941 Transmit Data
D942 - D947 Receive Data
D8098 Communication Error
D1248 - D1253 Transmit Data
D1254 - D1259 Receive Data
D8099 Communication Error
D1260 - D1265 Transmit Data
D1266 - D1271 Receive Data
Slave Stations
D8069 Communication Error
Slave Station 1 D900 - D905 Transmit Data
D906 - D911 Receive Data
D8069 Communication Error
Slave Station 2 D900 - D905 Transmit Data
D906 - D911 Receive Data
D8069 Communication Error
Slave Station 3 D900 - D905 Transmit Data
D906 - D911 Receive Data
D8069 Communication Error
Slave Station 4 D900 - D905 Transmit Data
D906 - D911 Receive Data
D8069 Communication Error
Slave Station 30 D900 - D905 Transmit Data
D906 - D911 Receive Data
D8069 Communication Error
Slave Station 31 D900 - D905 Transmit Data
D906 - D911 Receive Data