SIMATIC S7-300, digital input SM 321, electrically isolated, 16 DI, DC 24V, 1x 20-pin The SIMATIC ET 200M is a modular and universally applicable I/O system for the control cabinet in IP20, which can be used both as a central I/O on an S7-300 and in a decentralized configuration on a PROFINET or PROFIBUS ET 200M interface module. Up to 12 IO modules can be plugged into each station. The standardized structure of all modules makes logistics and spare parts management significantly easier. The ET 200M can be used for both standard and safety-related applications. Up to 12 high-channel signal (e.g. 64 digital inputs) and function modules as well as communication processors of the S7-300 can be used as I/O modules (the interface to the process). The ET 200M also supports modules with extended user data, such as HART modules with HART auxiliary variables. For easy wiring, the ET 200M offers you Fast Connect, which does not require stripping, in addition to conventional connection technologies.
| Property | Value |
| Number of digital inputs: | 16 |
| Redundancy capability: | yes |
| Supply voltage for DC: | 20.4 to 28.8 V |
| Height: | 125 mm |
| Width: | 40 mm |
| Depth: | 120 mm |
| Type of supply voltage: | DC |
| Type of input voltage: | DC |
| Permissible voltage at the input: | -30 to 30 V |
| Suitable for safety functions: | no |
| Input current for signal 1: | 7 mA |
| Delay time for signal change: | 1.2 to 4.8 ms |
| Associated equipment (Ex ia): | no |
| Associated equipment (Ex ib): | no |
| Digital inputs configurable: | yes |
