| Model no | E3 SR20 | |
| Article No | ||
| Product description | E3 CPU SR20,Electric Relay | |
| Conventional norm | User program length | 12K |
| User Data | 8K | |
| Power-down data remains | Power loss remains permanent | |
| On-board digital I/O | 12DI/8DO | |
| Digital I/O image size | 256-bit input (I)/256-bit output (Q) | |
| Simulate the I/O image area | 56 words input (AI)/56 words output (AO) | |
| expansion module | not supported | |
| Signal board expansion | not supported | |
| Edge break | Four rising edges and four falling edges | |
| Pulse capture input | non | |
| High speed counter | 4 counters in total, single phase: 4 50KHZ (HSC0-3), A/B phase: 1 30KHZ (HSC0) | |
| DI Filtering time | only support 0，6.4msand12.8ms(0 Filtering is non Filtering6.4ms) | |
| pulse output | not supported | |
| Motion Control Wizard/Motion Control Panel | not supported | |
| Bit memory (M) | 256 bit | |
| Temporary (local) storage | 64 bytes in the main program, 64 bytes in each subroutine and interrupt program | |
| Sequential control relay (S) | 256 bit | |
| Time break | two 1msresolution | |
| Computing speed | Boolean: 0.35us Moving word: 1.2us Real time operation: 1.7us | |
| The Real time clock | Not supported | |
| Extended real-time clock (multiple time zones) | Not supported | |
| Memory card | Support PLC program update, support firmware upgrade |
| Serial communication | port | 1 RS-485 |
| PPI, MPI (slave) baud rate | 9.6Kbps 19.2Kbps 187.5Kbps | |
| Free port port baud rate | 1.2K~115.2K | |
| Maximum number of sites | 32 stations per section, 126 stations per network | |
| Maximum number of masters | 32 | |
| MPI connect | 4 in total, 2 reserved (1 for PG and 1 for OP) | |
| Point-to-point (PPI master mode) | Not supported |
| Ethernet communication | Port | one ofRJ45Ethernet100M |
| Adaptive cross connect | support | |
| HMI equipment | 5 connections shared with Modbus TCP (same as standard CPU) | |
| Programming devices（PG) | 1 connection | |
| Modbus TCP master/slave communication | 5 connections are shared with the HMI |
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