| ??? 04/08/10 06:42 Read: times |
#174904 - many clients Responding to: ???'s previous message |
These days allmost nobody cares about bandwidth - coax cable ethernet is far in past. But let forget this and imagine that RS485 is used instead wideband Ethernet. Many clients to one "web programmmer" server will be not prefferable , i think.
Anyway - building/programming many clients (or servers) into end devices or interface convertors can be used only if everything is based on some standard , else building/developing can be endless in time. So i prefer to imagine planned by Grant Beattie system as: - end devices with some standard protocol (ASCII Modbus for example , i suppose RTU is harder to lead trough Ethernet/Serial) - Ethernet/serial convertes from box. Here customisation to adapt non-Modbus end devices. - OPC server onto PC. - good guide book "OPC for web programmers". On other hand - i'm just reader, who never was building such systems. regards |
| Topic | Author | Date |
| Ethernet Redux | 01/01/70 00:00 | |
| The problem is, I think | 01/01/70 00:00 | |
| Web type programmers... | 01/01/70 00:00 | |
| Wrong way around! | 01/01/70 00:00 | |
| Nice | 01/01/70 00:00 | |
| How do you program it? | 01/01/70 00:00 | |
| Free compiler for the new Cortex-M3 | 01/01/70 00:00 | |
| RE: Free compiler for the new Cortex-M3 | 01/01/70 00:00 | |
| 'penalty' of no IDE? | 01/01/70 00:00 | |
| Missed the point | 01/01/70 00:00 | |
| Both | 01/01/70 00:00 | |
| many clients | 01/01/70 00:00 | |
| many clients - definitely the way to go! | 01/01/70 00:00 | |
| Wiznet does TCPIP | 01/01/70 00:00 | |
| ... and ethernet MAC | 01/01/70 00:00 | |
| Clients and servers | 01/01/70 00:00 | |
| That's a "Client" | 01/01/70 00:00 | |
so | 01/01/70 00:00 |