Interface Description
IGSS32 offers a TCP/IP interface for the MODBUS/TCP type PLC equipment. A standard Ethernet interface board in the PC together with standard Windows TCP/IP protocol stacks enables IGSS32 to communicate with CPUs using the Open Modbus/TCP specification. The communication interface support both direct and dialled-up connections. The IGSS32 system polls the PLC equipment cyclically according to one of four user-defined time intervals. The time intervals are configurable from 100 milliseconds to 999 seconds. The system automatically groups process data in data blocks – thus fully exploiting the the communication link in relation to the present configuration.
Technical Data
| Electrical Interface | : | Ethernet. |
| Protocol | : | According to OPEN MODBUS/TCP SPECIFICATION. |
| Types of data | : | String, Fixed point, 8,16,32, BCD 16,32 Floating Point etc. |
| PLC types supported | : | All PLC’s complaying to the OPEN MODBUS/TCP SPECIFICATION with RTU encoding. |
| Addressing | : | Node (PLC), data type (Coils, Discrete Input, Word Inputs, and Holding Registers), offset , bit offset (a whole number of words is read or written). |
| Supported platforms | : | Windows Vista, Windows XP, Windows 2003 Server, Windows 2000 |
| Max. telegram size | : | 250 bytes per telegram |
| Transmission speed | : | Ethernet speed |
| Throughput | : | Dependent on the Ethernet. |
| Max. number of channels | : | Up to 150 channels are currently supported. |
| Max. number of nodes | : | Up to 255 nodes. |
| PC hardware requirements | : | Standard PC ethernet interface board. |
| PC software requirements | : | Standard Microsoft windows TCP/IP protocol stack. |