Serial I/O for Modbus or WIB-netApplications
Connected via RS485 and communicating either Elpro or Modbus protocols, the 115S series expansion products are available in 3 versions of I/O count and are able to be used in the following modes:
- Expansion I/O for 105U wireless units
up to 10 x 115S units can be connected to each wireless unit via RS485 (up to 2 km long).
- Serial I/O multiplexer
transfer I/O via RS485 - up to 32 units per multi-drop link.
- Expansion I/O for Modbus devices
up to 31 x 115S units can be connected to each Modbus master via RS485 (up to 2 km long)
The Elpro 115S modules are designed to provide I/O expansion for other Elpro products like 105U module. The 115S modules support the Elpro E-Series protocol, and communicate serially via RS232 or RS485. Configuration is done via the Elpro E-Series configuration utility.
The 115S modules also support Modbus protocol. They may be used as a Modbus slave with any 3rd-party Modbus device, or with the Elpro 105U-G module using Modbus. They support both MODBUS ASCII protocol, and serial unsigned MODBUS RTU, also known as “MODBUS binary”. The Modbus slave address of the 115S is selected via two rotary switches on the bottom panel of the case.
All 115S models provide digital inputs and outputs. Specific models provide analog inputs or analog outputs. Pulsed inputs and pulsed outputs are also available. Several modules may be connected to one master, allowing any combination of I/O types.