Tecfluid MX4B - Manual (Page 21)

21
Byte Bit Meaning Class
Field Device
Status bits set
0x01
This bit is set when a configuration data error
is detected on a cold start or reset of the
device and the configuration data has been
recovered from block 1 of data memory
Warning 0x10
0 0x02
This bit is set when a configuration data error
is detected on a cold start or reset of the
device and the configuration data has been
recovered from block 2 of data memory
Warning
0x10
0x04
This bit is set when a configuration data error
is detected on a cold start or reset of the
device and the configuration data has been
recovered from block 3 of data memory
Warning
0x10
0x80 Default values have been loaded into memory Error 0xE0
Byte Bit Meaning Class
Commands
that can reset
the bit
Field Device
Status bits set
0x10
Lower range has not been
configured
Warning 35 0x80
1 0x20
Upper range has not been
configured
Warning 35 0x80
0x40
Flow rate (PV) units have not
been configured
Warning 44 0x10
Bits not mentioned are not used and are always reset to “0”.
For byte 0, bits 0x01, 0x02 & 0x04 resets when command 48 is answered. Bit 0x80 is
reset when all bits from byte 1 are 0.
Byte Bit Meaning Class
Commands
that can reset
the bit
Field Device
Status bits set
2
0x40
Polling Address has not been
configured
Warning 6 0x10
0x80 Tag has not been configured Warning 18 0x10
The three bits in byte 1 are set when a configuration data error is detected on a cold start
or reset of the device. Each bit is reset when the corresponding data is accessed by a
write command or manually by the operator.
In byte 2, bits 0x40 and 0x80 cannot be reset manually by the operator
Bytes 3, 4 & 5 of Device Specific Status are not used and all their bits will be reset “0”.
Command 15. Returns PV units code in byte 2. Internally, Upper and Lower Range units
are the same as Primary Variable units.
Command 18. It can return a response code 9 “Invalid Date Code”. The date code is
filtered, “day” byte must be in the range from 1 to 31 both inclusive and “month” byte must
be between 1 and 12 both inclusive.
Command 48. Returns 8 data bytes. Specific Device Status bytes are the following: