Fairbanks X SERIES PR 5220 ETHERNET TRANSMITTER - Manual (Page 78)

Section 6: SMA Protocol
05/11 79 51209 Revision 2
6.6.6 Scale Reply with ‘I’ and ‘N’ Commands
Reply format with and 'N' commands (variable length):
:
Reply format and meaning:
Start of reply from 'I'/'N' command
The field name is three characters long, left-adjusted and filled up with spaces, if
necessary.
The following fields are sent:
“SMA” level/revision
(reply from ‘I’ command)
“TYP” Scale type: ‘S’= scale
(reply from the 1st ‘N’ command)
“CAP” Max, unit, scale interval and decimal position, separated by ‘:’
Meanin
g:
yyyyyy= uuu:c..c:n:d
uuu= unit
n= scale interval (e.g. 1, 2, 5,10,20…) without decimal point
d= decimal point position
‘0’= without, ‘1’= xxxx.x, ‘2’= xxx.xx, ‘3’= xx.xxx , ... etc.
(reply from the 2nd ‘N’ command)
“CMD” Supported SMA commands
(reply from the 3rd ‘N’ command)
“END” This is always the last inscription field
(reply from the last ‘N’ command)
‘:’ Separator between field name and field content.
The data field has up to 25 characters.
The SMA field contains
Meaning: level= (1, 2, etc.); revision= (1.0, 1.1, etc.)
Start of reply from 'I'/'N' command
Example: 6000kg x 1kg platform scale
Command
Reply
I SMA:2/1.0
N TYP:S
N CAP:kg_:6000:1:0
N CMD:HPTMCR
N END:
Example: 5000g x 1g, 10000g x 2, 25000g x 5 multiple range / multi-interval
Command
Reply
I SMA:2/1.0
N TYP:S
N CAP:g_:5000:1:0
CAP:g_:10000:2:0
CAP:g_:25000:5:0
N CMD:HPTMCRQ
N END:
6.7 Communication Error
When a communication error due to a parity error or a frame error (if used) was detected, the scale
sends an ASCII ‘!’ character. The only other error is the detection of an unknown or non-supported
command. In this case, an ASCII '?' character is sent as a reply. Dependent on the error messages,
the controlling computer must decide how to continue the scale operation.