Ropex RESISTRON RES-5009, User Manual, Page: 82 / 98

ROPEX CAN
Page 82 RES-5009 Version 1
11.5.2 START/STOP command
CAUTION
During the execution of the AUTOCAL function or when the RESET command is active, a START
command or a “START” signal is not accepted (“HEAT” LED blinks quickly).
During a warning message with error no. 8…12 or 104…106, 111…114, 211, 302, 303, the alarm output is
switched when a START command is activated (
 section 9.15 "Error messages" on page 49). A heat-up process
also does not take place here.
The parameter “value” in the START command (address 5) has the following structure:
START is only accepted if there is no alarm and the “AUTOCAL” function is not executed (  section 11.6.1 "Con-
troller status" on page 87). Together with the START command, the number of the desired setpoint and the max-
imum heating time (50…2550 ms) are transmitted. If the RESISTRON
®
Temperature Controller RES-5009 is to
heat for longer than 2550 ms (e. g. for permanent heating), a new START command must be sent before the
heating time expires. This ensures that the controller does not heat uncontrollably for a long time in the absence
of CAN communication. To end the heating phase prematurely, a START command with heating time < 5 (corre-
sponding to < 50 ms) can be sent – the setpoint number is irrelevant. The controller then immediately ends the
heating phase and switches to measurement mode.
Each START/STOP command is answered with an acknowledgement message (CAN message address 0009).
The acknowledgement message contains the current temperature value and the lower 6 bits of the controller
status.
11.5.3 Measurement pause command
The parameter “value” in the measurement pause command (address 50
h
) has the following structure:
Together with the measurement pause command, the maximum measurement pause duration (50…2550 ms) is
transmitted. If the RESISTRON
®
Temperature Controller RES-5009 is to remain in the measurement pause for
longer than 2550 ms, a new measurement pause command must be sent before the measurement pause duration
expires. This ensures that the controller does not remain in the measurement pause state uncontrolled in the
absence of CAN communication. To end the measurement pause prematurely, a measurement pause command
with duration < 5 (corresponding to < 50 ms) can be sent. The controller then immediately ends the measurement
pause and switches to measurement mode.
Bit no. Name Meaning
Bit 0…7 Heating time Time in 10 ms resolution until the control process is automatically
switched off, at least 50 ms.
Bit 8 0…9 Setpoint Number of the desired setpoint (0…3)
Bit 10
0…15 Unused
Bit no. Name Meaning
Bit no. Name Meaning
Bit 0…7
Duration of meas-
urement pause
Time in 10 ms resolution until the measurement pause is automati-
cally switched off, at least 50 ms.
Values smaller than 50 ms deactivate the measurement pause.
Bit 8…15 Unused