AH500 Programming Manual Please refer to section 6.22 for more information related to the Ethernet control instructions. 16. The functions related to the PLC Link SM1392~SM1598, and SR1329~SR1787 The PLC Link supports COM1 on the PLC. At most 32 slaves can be connected. When the master connects to the AH500 series programmable logic controllers, at most 450 words or 7200 bits can be read from the AH500 series programmable logic controllers and written into them. When the master connects to other models which support the standard Modbus, at most 100 words or 1600 bits can be read from these models and written into them.
2-86 Socket Number Item 1 2 3 4 5 6 7 8 Transmitted data address (low word) SR1228 SR1240 SR1252 SR1264 SR1276 SR1288 SR1300 SR1312 Received data length SR1229 SR1241 SR1253 SR1265 SR1277 SR1289 SR1301 SR1313 Received data address (high word) SR1230 SR1242 SR1254 SR1266 SR1278 SR1290 SR1302 SR1314 Received data address (low word) SR1231 SR1243 SR1255 SR1267 SR1279 SR1291 SR1303 SR1315 Transmitted data counter SR1232 SR1244 SR1256 SR1268 SR1280 SR1292 SR1304 SR1316 Received data counter SR1233 SR1245 SR1257 SR1269 SR1281 SR1293 SR1305 SR1317 Master Slave 1 Slave 2 … Slave 32 Read Write Read Write … Read Write Latched area Address in the master:
The device address into which the data is read (SR1404 and SR1405) Address in the master: The device address from which the data is written (SR1468 and SR1469) Address in the master: The device address into which the data is read (SR1406 and SR1407) Address in the master: The device address from which the data is written (SR1470 and SR1471) … Address in the master: The device address into which the data is read (SR1466 and SR1467) Address in the master: The device address from which the data is written (SR1530 and SR1531) Address in the slave: The device address from which the data is read (SR1532 and SR1533) Address in the slave:
The device address into which the data is written (SR1596 and SR1597) Address in the slave: The device address from which the data is read (SR1534 and SR1535) Address in the slave: The device address into which the data is written (SR1598 and SR1599) … Address in the slave: The device address from which the data is read (SR1594 and SR1595) Address in the slave: The device address into which the data is written (SR1658 and SR1659) Number of data which is read from the slave (SR1660) Number of data which is written into the slave (SR1692) Number of data which is read from the slave (SR1661) Number of data which is written into the slave (SR1693) …
Number of data which is read from the slave (SR1691) Number of data which is written into the slave (SR1723) Device type (SR1340) Device type (SR1372) Device type (SR1341) Device type (SR1373) … Device type (SR1371) Device type (SR1340) Type of slave 1 (SR1724) Type of slave 2 (SR1725) … Type of slave 32 (SR1755) Address of slave 1 (SR1756) Address of slave 2 (SR1757) … Address of slave 32 (SR1787)