M850
Relay(s) Action
Read/Write
The M850 relay’s action
(energise or de-energise) at pulse time can be written/read using the table
below.
The format
is a one-byte bit pattern, where each bit is mapped to one physical relay,
(bit 0 = Relay 1, bit 1 = Relay 2)
At pulse time, if a bit is reset (0), the corresponding relay’s function
is to energise, if set (1) it will de-energise.
Example:
An M850 has two relays installed and these are numbered RLY1 and RLY2.
By default, they correspond to bit positions 0 and 1 respectively. The rest
of the bits (2 - 7) in the actions byte are ignored.
| Relays | 2 | 1 |
| Bit No. | 1 | 0 |
| Action Byte | 0 | 1 |
| Action at pulse time | De-energise | Energise |