ADLINK PXES-2590 - Manual (Page 47)

Monitoring/Control Functions 37
PXES-2590
*Read +12V Voltage (command 0x08)
Reads the +12V Voltage
Use the SMB 1 Send Byte and 2 Receive Byte to Read this
word data:
Data format is as follows:
*Read -12V Voltage (command 0x0A)
Reads the -12V Voltage
Use the SMB 1 Send Byte and 2 Receive Byte to Read this
word data:
Data format is as follows:
Send Byte > 0 SA Slave address
> 1 0x08 command code
Receive Byte > 2 SA Slave address
< 3 0-255 Low byte data
Receive Byte > 4 SA Slave address
< 5 0-255 High byte data
Bit Description
15..0 +12V Voltage. Measured +12V voltage. 16-bit 2’s
complement , the LSB is 1mV
SMB Dir Offset Value Description
Send Byte > 0 SA Slave address
> 1 0x0A Command code
Receive Byte > 2 SA Slave address
< 3 0-255 Low byte data
Receive Byte > 4 SA Slave address
< 5 0-255 High byte data
Bit Description
15..0 -12V Voltage. Measured -12V voltage. 16-bit 2’s
complement, the LSB is 1mV