| ??? 12/04/08 17:28 Read: times |
#160607 - Suggestion Responding to: ???'s previous message |
Makarand said:
1)group of 128 switches located together
2)single pair that snakes around all 128 switches, 3)Does this mean that you need a microcontroller at each switch? that is to be decided. In that case, can you have "short" wires from the switches to the microcontroller, and then just one long wire from the microcontroller to the PLC...? |
| Topic | Author | Date |
| long distance communication | 01/01/70 00:00 | |
| TelCo? | 01/01/70 00:00 | |
| Contact ID? | 01/01/70 00:00 | |
| more information would be helpful | 01/01/70 00:00 | |
| Breif Explaination | 01/01/70 00:00 | |
| is there local power at the "field switches" ? | 01/01/70 00:00 | |
| INdustrial Data Comms Supplier | 01/01/70 00:00 | |
| In North America | 01/01/70 00:00 | |
| Another Industrial Data Comms Supplier | 01/01/70 00:00 | |
| Too brief | 01/01/70 00:00 | |
| re: | 01/01/70 00:00 | |
| Suggestion | 01/01/70 00:00 | |
| re:Andy Neil | 01/01/70 00:00 | |
| or with wifi | 01/01/70 00:00 | |
| Past Experience | 01/01/70 00:00 | |
| Serious warning | 01/01/70 00:00 | |
| with PLC or rs-485 | 01/01/70 00:00 | |
| SHM ,LHM | 01/01/70 00:00 | |
| It might interest you to know ... | 01/01/70 00:00 | |
| There are ways but, | 01/01/70 00:00 | |
| DC? ... over a 10 kM line? | 01/01/70 00:00 | |
| I might suggest that you consider... | 01/01/70 00:00 | |
HART | 01/01/70 00:00 |