Conair Thermolator TW-1 User Manual page 109

The SPI commands supported by Conair Thermolator
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.
SPI Command Pairs
Mold temperature controllers
Commands
Echo
- Select stores 4 bytes of information at the Thermolator; Poll retrieves it.
Version
- Retrieves 4 bytes of SPI version information.
Setpoint Process Temperature
- Sets and retrieves the process temperature setpoint.
Alarm, High Temperature Deviation*
- Sets the alarm band temperature; retrieves setpoint + alarm band value.
Alarm, Low Temperature Deviation*
- Sets the alarm band temperature; retrieves setpoint + alarm band value.
Process Status
- Retrieves run status and alarm conditions.
Status, Machine 1
- Retrieves run status and alarm conditions.
Status, Machine 2
- Retrieves run status and alarm conditions.
Mode, Machine
- Start/stops the Thermolator; acknowledges alarms; retrieves run status
Temperature, to Process
- Retrieves the actual temperature of fluid leaving to the Thermolator.
Temperature, from Process
- Retrieves the actual temperature of fluid returning to the Thermolator.
* NOTE: Both High and Low Temperature Deviation commands set the
same variable. Use only one of these commands to avoid problems.
SPI S W
TATUS ORDS
See
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
www.plasticsindustry.org
UGH025-0504
for status words and BIT positions for
Fax: (202) 296-7005
Thermolator TW Series
® mold
Device ID: hex 20
Select Poll
0x20 0x20
0x21 0x20
0x20
0x22
0x20 0x20
0x31 0x30
0x20 0x20
0x33 0x32
0x20 0x20
0x35 0x34
0x20
0x40
0x20
0x42
0x20
0x44
0x20 0x20
0x49 0x48
0x20
0x70
0x20
0x72
TW-1, TW-2
C
ONTROLS
C
OMMANDS
S
UPPORTED BY
C
THE ONAIR
T
HERMOLATOR
A
PPENDIX
SPI
®
D-1