| Spec | Description |
|---|---|
| S1 | Process variable |
| S2 | Set-point track |
| S3 | Automatic signal |
| S4 | Control output track |
| S5 | Normal/track switch |
| S6 | Manual interlock
|
| S7 | High alarm point (EU) |
| S8 | Low alarm point (EU) |
| S9 | Set-point deviation alarm |
| S10 | Process value/set-point signal span |
| S11 | Process variable zero value |
| S12 | Set-point zero value |
| S13 | EU identifier (console use) |
| S14 | Set-point track (see below) |
| S15 | Computer time-out (see below) |
| S16 | Control station (>15 no station) |
| 0 | No |
| 1 | Process variable (S1) |
| 2 | S2/manual only |
| 3 | S2/manual and auto |
| 0 | Unchanged auto/manual |
| 1 | Manual |
| 2 | Auto |
| 3 | Cascade/ratio |
| 4 | Unchanged local auto/manual |
| 5 | Local manual |
| 6 | Local Auto |
| 7 | Local cascade/ratio |
| Block | Type | Description |
|---|---|---|
| N | Real | Control output (percent) |
| N+1 | Real | Set-point (EU) |
| N+2 | Bit | Manual/auto mode |
| N+3 | Bit | Local/computer level |
| N+4 | Bit | BASIC/cascade station |
| N+5 | Bit | Computer time-out |