Rockwell Automation 900 Temperature Controller Communications Functions - Series B - Manual (Page 96)

Publication 900-UM004D-EN-E - July 2010
5-14 Communications Data for Modbus
Status Figures 5.1, 5.3 and 5.3 and Tables 5.11 and 5.12 show the structure of the
status data. NOTE: Spare bits are always OFF.
Figure 5.1 Status Structure
Figure 5.2 Status Structure (Continued)
0 0
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit position
Heater overcurrent (CT1)
Heater current hold (CT1)
A/D converter error
HS alarm (CT1)
Display range exceeded
Input error
Control output (heating)
Control output (cooling)
HB (heater burnout) alarm (CT1)
HB (heater burnout) alarm (CT2)
Alarm 1
Alarm 2
Alarm 3
Program end output
Outputs Input error HB error
0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Bit position
Event input 1
Event input 2
Event input 3
Event input 4
Write mode
EEPROM
Setup area
AT execute/cancel
RUN/STOP
Communications writing
Auto/manual switch
Program start
Heater overcurrent (CT2)
Heater current hold (CT2)
HS alarm (CT2)
Operating status Event inputs HB error
]
NA 900-TC8, 900TC16, and 900-TC32