24: REMOTE I/O SYSTEM
24-2 OPENNET CONTROLLER USER’S MANUAL
Specifications
Link Registers for Remote I/O System
I/O points at each node are allocated to predetermined link registers in the OpenNet Controller CPU module. Only read
(InputData) and write (OutputData) functions can be used for the OpenNet Controller remote I/O communication. Nodes
and link registers are allocated as listed below:
Maximum Points per Node 128 points
The total I/O points per node is 128 points maximum.
A node is allocated 4 link registers each for inputs (16 × 4 points) and
outputs (16 × 4 points).
Maximum Quantity of Nodes 32 nodes The maximum quantity of nodes includes bus stations without I/Os.
Maximum Total I/O Points (4096 points)
When using SX5 communication I/O terminals as remote slave sta-
tions with 16 inputs or 16 outputs, a maximum of 512 I/O points can
be connected to the remote I/O network.
Node Input Operand Output Operand Node Input Operand Output Operand
Node 0 L1000-L1003 L1004-L1007 Node 16 L1160-L1163 L1164-L1167
Node 1 L1010-L1013 L1014-L1017 Node 17 L1170-L1173 L1174-L1177
Node 2 L1020-L1023 L1024-L1027 Node 18 L1180-L1183 L1184-L1187
Node 3 L1030-L1033 L1034-L1037 Node 19 L1190-L1193 L1194-L1197
Node 4 L1040-L1043 L1044-L1047 Node 20 L1200-L1203 L1204-L1207
Node 5 L1050-L1053 L1054-L1057 Node 21 L1210-L1213 L1214-L1217
Node 6 L1060-L1063 L1064-L1067 Node 22 L1220-L1223 L1224-L1227
Node 7 L1070-L1073 L1074-L1077 Node 23 L1230-L1233 L1234-L1237
Node 8 L1080-L1083 L1084-L1087 Node 24 L1240-L1243 L1244-L1247
Node 9 L1090-L1093 L1094-L1097 Node 25 L1250-L1253 L1254-L1257
Node 10 L1100-L1103 L1104-L1107 Node 26 L1260-L1263 L1264-L1267
Node 11 L1110-L1113 L1114-L1117 Node 27 L1270-L1273 L1274-L1277
Node 12 L1120-L1123 L1124-L1127 Node 28 L1280-L1283 L1284-L1287
Node 13 L1130-L1133 L1134-L1137 Node 29 L1290-L1293 L1294-L1297
Node 14 L1140-L1143 L1144-L1147 Node 30 L1300-L1303 L1304-L1307
Node 15 L1150-L1153 L1154-L1157 Node 31 L1310-L1313 L1314-L1317
About INTERBUS
INTERBUS is a network originally developed for controlling sensors and actuators by Phoenix Contact, Germany, and
the specifications were opened in 1987. Today, many major automobile manufacturers in the world use the INTERBUS
network.
The INTERBUS system is a data ring with a central master-slave access method. It has the structure of a spatially dis-
tributed shift register. Every module forms with its registers a part of this shift register ring through which the data is
shifted serially from the host controller board. The use of the ring topology in this way offers the possibility of sending
and receiving data simultaneously (full duplex) and leads to better diagnostic possibilities when compared to a bus
structure.
To simplify system installation, the ring is implemented within one cable line (go and return line within one cable). The
system therefor appears as a bus system with branching lines (tree structure).
For detailed information about INTERBUS, read documents published by the INTERBUS CLUB or access the INTER-
BUS CLUB home page at www.interbusclub.com.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
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