User's Manual

RTM Elster AMCO applicative PFS Coronis Systems
5.4.7.Reading encoder internal data (Encoder only)
This feature allows to access directly to the information returned by the encoder(s) connected to RTM Elster
AMCO.
ATTENTION:
Data returned could be different according to the encoder model connected.
Reading encoder internal data request data format
Applicative command
1 byte
0x0B
Reading encoder internal data acknowledgment data format
The total length depends on encoder returned data length
Applicative
acknowledgment
command
Encoder
model on
Port A
Encoder
model on
Port B
Size of the
returned data
on Port A
Size of the
returned data
on Port B
Encoder data
different
according to
encoder
connected on
Port A
Encoder data
different
according to
encoder
connected on
Port B
1 byte 2 bytes 2 bytes 1 byte 1 byte N bytes N bytes
0x8B
0xFFFF
if no
encoder
connected
0xFFFF
if no
encoder
connected
0x00
if no encoder
connected
0x00
if no encoder
connected
(*) (*)
(*) Information returned by encoders: if any problem occurred during the communication with the encoder,
then the information returned in the encoder data field is set to 0xFF (N= 1 byte).
Encoder data” returned in case of Elster AMCO encoder connected (N = 29 bytes) :
Information
Size
(in bytes)
Description
AMCO/ELSTER
company identifier
1 0x4B
Value of meter wheels 6 Provide the meter value in ASCII characters
User serial number 10 10 ASCII characters
Registration units code 2 registration units
Encoded wheel digits 1 4,5 or 6 active digits
Digits before decimal point 1
Counted from the first “V” digit ( most significant)
Example: if d=4 & VVVVVV = 654321 then the value = 6573.21
Option 2 Indicates major software version
Manufacture adapter code 2 Example : 0x3730 = “Invision 21C
Error code 2
Checksum 2
EVO RTM-UserMan 36