Thermo Scientific ALPS 3000, Руководство пользователя

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11
Communication Protocol
ALPS 3000 Host Communication Protocol - Continued
9.7 - Status Message:
PC sends: ?<cr>
ALPS 3000 replies: <status byte><cr>
The status byte is a hexadecimal value represented in ASCII, i.e. the characters “ff” means 0xff hex.
9.8 - Bit values:
Bit 0 No Foil
Bit 1 Error
Bit 2 Busy
Bit 3 Waiting For Seal Temperature
Bit 4 Plate Not Present
Bit 5 Low Air
Bit 6 Foil Load Mode After Park
Bit 7 Park Mode
When checking the communication using, for example Hyper-terminal, the responses to the status message
enquiry are hexadecimal values which when converted to binary values allow the status to be interpreted.
For example, when the unit is heating or cooling and so not at the sealing temperature, the response is 08.
In binary this is 1000. Taking the bit values from 0-7 from the right bits 3 is at 1. The status is ‘not at seal
temperature’ as listed above.
9.9 - Seal Plate Command:
PC sends: S<cr>
ALPS 3000 replies: ok<cr>
If the sealing operation has commenced
Or: err<cr>
If it is unable to seal the plate.
9.10 - The ALPS 3000 will not seal the plate if the following conditions exist:
Status:
Bit 0 No Foil
Bit 1 Error
Bit 2 Busy
Bit 3 Not at seal temperature