32
Note
If the controller is not in control or idle mode and the temperature reading is requested
through the TMR command, the controller answers with the last acquired reading when
it was in control or idle mode.
Note
After a recognized PWD command is received, the controller allows a maximum of 1
minute without receiving data, after which it locks again and a new PWD command is
needed to perform password protected operations.
Following are examples of commands for setup items:
1)
“03 SET 22-01200<CR>”
This command sets the setup item 22 (relay 2 setpoint) of a EC controller, identified
by the process ID number 03, to the +12.00 mS value.
2)
“01 SET 33+005
◊◊
<CR>”
This command sets the setup item 33 (max. relay ON time) of a controller, identified
by the process ID number 01, to 5 minutes. The
“◊”
character means blank.
Once the controller has received a command, it answers with its 2-digit process ID
number followed by:
• ACK (Hex 06)
If the controller recognizes the received command and performs the requested
task;
• STX (Hex 02) , Data , ETX (Hex 03)
If the received command is a request of data;
• NAK (Hex 15)
If the received command is not recognized (e.g. the syntax is wrong);
• CAN (Hex 18)
If the controller cannot answer the request (e.g. the password was not sent,
the controller is in setup mode, the setup item is not available in that model,
etc.)
Note
The controller answers to the GET command with the same data format explained in
the SET command.
