Conair Thermolater vacuTrac, User Manual

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IMH001/0300
T
HERMOLATOR
SPI C
OMMANDS
A
PPENDIX
D-1
The SPI commands supported by Conair Thermolator ® mold
temperature controllers are listed in the following tables.
The standard required commands and three optional com-
mands are listed in the SPI Command Pairs table, along with
the Select and Poll command pairs in hexadecimal format.
Select commands set or change Thermolator functions. Poll
commands retrieve information from the Thermolator.
See the tables on the following pages for the SPI status words
and BIT positions for Process Status, Machine 1 Status and
Machine 2 status.
For more information on the SPI protocol, you can obtain the
SPI Communication Protocol Manual by contacting:
The Society of the Plastics Industry, Inc.
1801 K Street, NW
Suite 600K
Washington DC 20006
(202) 974-5200
Fax: (202) 296-7005
www.plasticsindustry.org
SPI C
OMMANDS
S
UPPORTED BY
THE
C
ONAIR
T
HERMOLATOR
®
SPI Command Pairs
Mold temperature controllers Device ID: hex 20
Commands Select Poll
Echo 0x20 0x20
- Select stores 4 bytes of information at the Thermolator; Poll retrieves it.
0x21 0x20
Setpoint Process Temperature 0x20 0x20
- Sets and retrieves the process temperature setpoint.
0x31 0x30
Alarm, High Temperature Deviation* 0x20 0x20
- Sets the alarm band temperature; retrieves se alarm band value.
0x33 0x32
Alarm, Low Temperature Deviation* 0x20 0x20
- Sets the alarm band temperature; retrieves se alarm band value.
0x35 0x34
Mode, Machine 0x20 0x20
- Start/stops the Thermolator; acknowledges alarms; retrieves run status
0x49 0x48
Version 0x20
- Retrieves 4 bytes of SPI version information.
0x22
Process Status 0x20
- Retrieves run status and alarm conditions.
0x40
Status, Machine 1 0x20
- Retrieves run status and alarm conditions.
0x42
Status, Machine 2 0x20
- Retrieves run status and alarm conditions.
0x44
Temperature, from Process 0x20
- Retrieves the actual temperature of fluid returning to the Thermolator.
0x72
* NOTE: Both High and Low Temperature Deviation commands set the
same variable. Use only one of these commands to avoid problems.