Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 104)

Programming
Chapter 3
3Ć61
Figure 3.19
Status Monitor Byte
1
0
07 06 05 04 03 02 01 00
0 0 1
ALARM
CONDITION
POWER-UP LOSS OF
+
POWER
LOSS OF
AN INPUT
SOFT
FAULT
MODE
SMB B03 1 = in powerĆup mode
SMB B02 Set if an input has been lost. This could be
Loss of Analog Input 1 W61 B07
Loss of Tieback Input 1 W61 B06
Loss of Analog Input 2 W68 B07
Loss of Tieback Input 2 W68 B06
SMB B01 Set for loss of +15V dc power (same status as W58 B11)
SMB B00 Set in soft fault mode (same status as W58 B10)
SMB B07 Set to 0
SMB B06 Set to 0
SMB B05 Set to 1
SMB B04 Set when any of the following bits are set in
the status word for Loop 1 W61 or Loop 2 (W68).
B15, E < EMN
B14, E > EMP
B10, V
I
> V
I
MAX
B05, in manual mode
B03, V
P
> 4095
B02, V
D
>V
D
MAX
B01, V < VMIN
B00, V > VMAX
Also set when the dynamic block error bit W58
B15 = 1 or when the loop block error bit W58 B14 = 1
11124
15Vdc