Siemens SITRANS RD200 Operating Instructions Manual page 76

Code: 40 Description: 4-20 mA Output - Data
Table D- 52 Command: Read
SOH (0x01) Meter Address
Table D- 53 Command: Write
SOH Meter Ad-
(0x01) dress
Table D- 54 Reply: Write and Read
STX '4' '0'
(0x02)
The data field is 7 characters. The range is 0 to +2399. Note that these values actually
represent 0.00 to +23.99 milliamps. Note that the write command does not include a decimal
point.
The reply data format is eight characters consisting of '+' followed by a number string. The
number string is always seven characters, consisting of either six digits and a decimal point,
or six digits with a leading zero if no decimal point is selected.
Note
Although the data range is 0.00 to 23.99 mA, the actual minimum and maximum outputs
available may be different from this range, depending on hardware tolerances. The hardware
is designed for a nominal range of 1.00 to 23.00 mA.
Note
If the 4-20 mA source selection is not Serial Communication(mA), this command will have no
effect on the 4-20 mA output. The reply will be –99.99 to indicate this improper operation.
Refer to Command 41 (next) for Modes.
76
Meter Address
Meter Ad- '4' '0'
dress
'+' '0' '0'
'4'
'+' '0' '0' X
X X .'
Operating Instructions, 05/2019, A5E47629414-AA
'0' '9' 'C'
X X X Check
sum
X X Check
sum
ETX (0x03)
Check ETX
sum (0x03)
Check ETX
sum (0x03)
SITRANS RD200