SIMATIC S7-400, digital input SM 421 6ES7421-7BH01-0AB0
| SIMATIC S7-400, digital input SM 421, galvanic isolation 16 DE; 24V DC with 0.05 ms input delay alarm, diagnostics |
Introduction
| SIMATIC S7-400, digital input SM 421, galvanic isolation 16 DE; 24V DC with 0.05 ms input delay alarm, diagnostics |
