The IM 308-C is a PROFIBUS DP master and/or slave module for SIMATIC S5-115U/H to S5-155U/H.
Up to 122 passive nodes such as, for example, standalone ET 200 I/O devices or field devices with PROFIBUS DP interface module, can be connected to an IM 308-C interface module.
The 308-C adapter kit enables the IM 308-C to also be used in central controllers 1, 2 and 3 of the SINUMERIK 840C. The adapter kit contains a printed-circuit board with the required electronics to convert the SINUMERIK 840C bus signals to the SIMATIC S5 bus system and the mechanical components for the assembly and installation of the adapter and IM-308-C.
The IM 308-C interface module must be inserted in the specified slot of the S5-115U/H programmable controller.
The module requires a single-width slot.
The PROFIBUS bus system is connected using
For operating the module, a 5-V memory card (256 KB) is required (included in the scope of supply).
Interface module IM 308-C coordinates channel access and data transmission over the PROFIBUS DP as a master module.
It can also operate as PROFIBUS DP slave and thus enables data exchange with other PROFIBUS DP masters.
The master and slave functionality can be implemented in combination, i.e. an IM 308-C receives data as slave from another PLC and simultaneously operates as master of, for example, ET 200 I/O devices.
The configuration is performed with the COM PROFIBUS configuration package (see SIMATIC Industry Software).
IM 308-C interface module
Data transmission rate
9.6 kbit/s to 12 Mbit/s
9-pin sub D socket
+5 V DC over backplane bus
Current consumption, approx.
13 KB for inputs, outputs and diagnostics
Number of I/O devices that can be connected max.
244 byte inputs and outputs per slave
Perm. environmental conditions
0°C to + 60°C
- 40°C to + 70°C
95 % at + 25°C
160 x 233.4