Omron V600 Series Operation Manual page 11

Communication Time
3-4-14 End Code List
Type End
code
During normal g
00
operation i
7B
74
75
76
Error in
10
communications i i
11
with host with host
12
com uter computer
13
14
18
Error in local 70
communications i i
71
72
7A
7C
7D
DC memory 75
warning g
76
3-5 Communication Time
48
End codes are given in two digits as hexadecimal numbers.
Normal end code
Low battery voltage warning (battery need to be replaced) (see note 1)
Command received, DC not close (see notes 2 and 3)
Command autoprocessing canceled (before processing communications with DC)
Command autoprocessing canceled (DC is near and processing is canceled during or after
communications)
Parity error
Framing error
Overrun error
FCS error (only for 1 to N connection)
Command input error
Frame length maximum error
DC communications error
Disagreement error
DC not present
Address too high
R/W Head not connected
Write protect error
Normal end code returned (with no error) after data check command or MDL command was
executed
Error code returned after data check command or MDL command was executed
Note 1. Processing is normal when 7B as an end code has been returned. If the volt-
age of the battery is low and no communications are available, an error
response such as 72 will be returned.
2. When a polling auto command is sent, the ID Controller promptly returns a
"command received" response (74).
3. When a polling auto command is sent to query processing results, the ID
Controller returns a "DC near" response (74) if the DC is not present. Refer
to 6-3 Error Lists for more details on the errors.
The time required for communications varies with the DC memory type (SRAM
or EEPROM). Furthermore, if the memory is EEPROM, communications time
varies with the slave communications mode setting. The communications time
consists of TAT (turn around time) and slave communications time. TAT is the
time required for the host computer to receive a response after it has finished
sending a command. Slave communications time is the time required for com-
munications between the R/W Head and DC and is exclusive of host commu-
nications time. Slave communications time is used as a reference when calcu-
lating the moving speed of an auto command.
(Example)
RDH 1 –––––– *)
Command
Name
RD 0 0 1 1 2 2 –––––– *)
Time required for
Response
communications
with slave
TAT
Section 3-5