Comparison of functions and performances between the E-SX bus and the SX bus
Synchronization control of E-SX busConnection function of the E-SX bus
| Tact period | 0.25ms | 0.375ms | 0.5ms | 1ms | 1.5ms | 2ms | |
|---|---|---|---|---|---|---|---|
| Max. I/O size (no. of I/O stations) |
4 stations | 67word | 256word | 512word | 2048word | 2048word | 4096word |
| 16 stations | - | - | 256word | 1024word | 1024word | 1024word | |
| 32 stations | - | - | - | 512word | 2048word | 2048word | |
| 64 stations | - | - | - | - | 512word | 1024word | |
| SPH3000MM | E-SX bus | ○ | ○ | ○ | ○ | ○ | ○ |
| SX bus | × | × | × | ○ | ○ | ○ | |
| SPH3000 | SX bus | × | × | × | ○ | ○ | ○ |
FTP communications
By using the file transfer function to a personal computer or other SPH3000 unit, setting, logging, and data including recipes can be shared.
SNTP client
After obtaining the server reference time and correcting the clock data, the logging data with accurate time can be created.
Mail client
By using the mail sending function in SPH3000 application, it is possible to notify maintenance service personnel by text data.
| Function and performance | SPH3000 | SPH3000MM | |
|---|---|---|---|
| System bus | SX bus | SX bus | E-SX bus |
| Direct connection I/O capacity | 512 words | 512 words | 4096 words |
| Refresh performance | 128 words/ms | 128 words/ms | 2048 words/ms |
| Transmission rate | 25Mbps | 25Mbps | 100Mbps |
| Tact fluctuation | 100μs | 100μs | ±1μs or less |
| Synchronization between stations | None | None | Provided (±1μs or less) |
| Distance (between stations/total distance) | 25m/25m | 25m/25m | 100m/1km |
| Continued operation at disconnection(loop back) | None | None | Provided |
Direct connection I/O capacity
Transmission rate
Refresh performance
Tact accuracy
Distance
Synchronization in the bus
Data output timing is synchronized in the E-SX bus.
Synchronization between buses
Data output timing is synchronized between channels of the E-SX bus.
Loopback function
Communication is continued by the signal repeater function even when a wire is broken.
Signal bypass function
Even when a power of some devices is not turned on, the communication is continued by the auxiliary power unit.
