Interface Description
The IGSS32 SAIA S-BUS communication interface offers connection to all Saia PLCs supporting the S-BUS protocol. The SAIA S-BUS protocol can be used in both direct point-to-point and multidrop configurations. It can also be used in dialled-up applications using leased lines or public tele-network. The coommunication driver uses an industri standard RS232-C serial interface on the PC and supports all three SAIA S-BUS communication modes: parity, break and data mode.
For more information on the supported SAIA PCD series PLCs: https://www.saia-pcd.com/
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 | : | RS232 |
| Protocol | : | SAIA S-BUS (break, parity or data mode) |
| Types of data | : | String, Fixed point 8, 16, 32, BCD 16, 32, IEEE Float, P8 Float and integer. |
| PLC types supported | : | All SAIA PCD series PLCs supporting the SAIA S-BUS Protocol. |
| Addressing | : | Node (PLC), data type (Register (16 and 32 bit), input, output, flags, timer and counter), Type index, bit offset. |
| Supported platforms | : | Windows Vista, Windows XP, Windows 2003 Server, Windows 2000 |
| Max. telegram size | : | 128 bytes pr. Telegram |
| Transmission speed | : | Up to 115Kbaud depending on the PLC port speed. |
| Communication mode | : | Half duplex |
| Throughput | : | Up til 4 telegrams pr. Channel pr. Second (depending on available bandwidth). |
| Max. number of channels | : | Up to 8 COM ports are supported concurrently. |
| Max. number of nodes | : | 1 pr. COM port |
| PC hardware requirements | : | 1-8 standard serial ports (COM ports). Standard modem(s) if dialled-up is used. |
| PC software requirements | : | None |