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EF
READ ERROR FLAG
Command Description
Requests the error status byte
consisting of 8 flags
Command Type
Read only
Read Command Syntax #01EF[CR]
Typical Read Command Response:
Typical Read Command Response:
This represents Err 03 bad command or bad value. A NAK
will appear in any response if 1 or more Error bits are set. An
ACK means that no Error bits were set. See page 38 for all 8
error codes.
ER
READ FROM EEPROM ADDRESS
Command Description Returns a specified EEProm loca-
tion’s value in decimal format, as a
3 digit value ranging from 000 to
255.
Command Type READ Only Command
Read Command Syntax #01ER005[CR]
Read from EE location 005
Typical Read Command Response:
Display the EEProm location contents as a 3-character string
with ACK/NAK and CR LF applied
ER Typical Read Command Response
ew
WRITE TO EEPROM ADDRESS
Note: Unlock the Eprom prior to using this command.
Command Description Writes a value to the current
EEProm address. The current
EEProm address is set using the
ER command above. To change an
EEProm address content, both ER
and ew commands must therefore
be used in tandem. The “ER”com-
mand points to the address for the
“ew” command. Note: Both RAM
and eeprom are refreshed.
Command Type
Write Only Command
Write Command Syntax #01ew002[CR] ……. Writes “002”,
to current EE location.
Typical Write Command Response:
Echoes back the characters written as a 3-character string
with ACK/NAK and CR LF appended
ew Typical Write Command Response
Char. Position
1
2
3
4
5
6
7
8
9
10
11
Response Char.
0
0
0
0
0
0
0
0
ACK CR
LF
Char. Position
1
2
3
4
5
6
7
8
9
10
11
Response Char.
0
0
1
0
0
0
0
0
NAK CR
LF
Char. Position
1
2
3
4
5
6
Response Char.
0
0
0
ACK CR
LF
Char. Position
1
2
3
4
5
6
Response Char.
0
0
2
ACK CR
LF