Watlow Series 942 Data Communications - Manual (Page 18)

18 WATLOW Series 942 How to Use Data Communications
Commands
Data Comm
Table 4 -
"?" Commands
and Responses.
These commands
are READ ONLY.
The "?" Command
reads a specific
value of the Series
942 parameter
(Data.1).
Data.1 Respns
Information Comments
BTYP 0 T/C Only
1 T/C, RTD whole, process
2 T/C, RTD tenths, process
3 R, S, B T/C
C1 PROCESS Process value Between RL and RH
CSP SETPOINT Current Profile Set point Between RL and RH
EJC 0 - 100 The # of jumploops remaining. Run mode only.
ENSP End Set Point of current step. Run mode only.
ERR 0 No error Multiple errors are possible.
1 Open sensor
2 Reversed sensor
4 Ambient sensor
8 Configuration
16 EE Checksum
32 A/D underflow
64 A/D overflow
128 Not used
ER2 0 No error Cleared when ER2 is read.
1 Transmit buffer overflow Only 1 ER2 response is valid.
2 Receive buffer overflow
3 Framing error
4 Overrun error
5 Parity error
6 Talking out of turn
7 Invalid reply error
8 Noise error
20 Command not found
21 Parameter not found
22 Incomplete command line
23 Invalid character
24 Number of chars. overflow
25 Input out of limit
26 Read only command
27 Write allowed only
28 Output 3 is not an event
29 Output 4 is not an event
30 Request to RUN invalid
31 Request to HOLD invalid
32 Command invalid in RUN mode
33 Command invalid in RUN mode
39 Infinite loop error
MDL See Page 21. Displays 942 X
X = software revision
MODE 1 Run mode Multiple modes are possible.
2 Hold mode
4 Configuration mode
8 Calibration mode
16 Alarm silence active
34 OFF
MTR See Page 21. Monitors current step Run or hold mode.
RESU See Page 22. Resume a profile Hold mode only.
"?" Command
The "?" command finds the specific value of a Series 942 parameter (Data.1).
Table 4 and 5 provide the complete list of parameters you may use, plus
responses. You may use the "?" command in either the RUN or HOLD modes.