Rockwell-automation 900 Temperature Controller Communications Function Manual do Utilizador descarregar pdf (Página 98)

Publication 900-UM004D-EN-E - July 2010

5-16 Communications Data for Modbus

➊

When the control output ON time is less than 190 ms, the bit is set to “1” and the heater current is held at the last current value.

➋ “Spare” bits are always OFF.

➌ When read in setup area 1, the status of the bits will be as follows: Alarm outputs: Cleared

Overcurrent: Last value held HB error: Last value held

Input error: Last value held HB and HS outputs: Cleared

Program end output: Cleared Current hold: Last value held

Display range exceeded: Last value held Heating and cooling outputs: Cleared

➍ NA for 900-TC8 , 900-TC16, and 900-TC32

Table 5.11 Status Details

Bit Position Status Bit Description

Status

(lower word)

0 Heater Overcurrent (CT1) Not generated Generated

1 Heater Current Hold (CT1) ➊ Update Hold

2 A/D Converter Error Not generated Generated

3 HS Alarm Output (CT1) OFF ON

4Spare➋ OFF —

5 Display Range Exceeded Not generated Generated

6 Input Error Not generated Generated

7Spare➋ OFF —

8 Control Output (Heating) OFF ON

9 Control Output (Cooling) OFF ON

10 HB (Heater Burnout) Alarm Output (CT1) OFF ON

11 HB (Heater Burnout) Alarm Output (CT2) OFF ON

12 Alarm Output 1 OFF ON

13 Alarm Output 2 OFF ON

14 Alarm Output 3 OFF ON

15 Program End Output OFF ON

Status

(upper word)

16 Event Input 1 OFF ON

17 Event Input 2 OFF ON

18 Event Input 3 ➍ OFF ON

19 Event Input 4 ➍ OFF ON

20 Write Mode Backup mode RAM write mode

21 EEPROM RAM = EEPROM RAM ≠ EEPROM

22 Setup Area Setup area 0 Setup area 1➌

23 AT Execute/Cancel AT canceled AT execution in progress

24 RUN/STOP Run Stop

25 Communications Writing OFF (disabled) ON (enabled)

26 Auto/Manual Switch Automatic mode Manual mode

27 Program Start Reset Start

28 Heater Overcurrent (CT2) Not generated Generated

29 Heater Current Hold (CT2) ➊ Update Hold

30 Spare➋ OFF —

31 HS Alarm (CT2) OFF ON

1 2 ... 93 94 95 96 97 98 99 100 101 102 103

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