Command And Response Timing; Command Input Timing - Omron V600-CA8A-V Series Operation Manual

Command and Response Timing

Abnormal Condition
1, 2, 3...
Error Code List
Error Line (ERR)
Response Strobe Lines (RS1 and RS2)
3-5

Command and Response Timing

3-5-1 Command Input Timing

2. The ERR line is not OFF, which informs the PC that local communications
have been performed normally.
3. Line RS1 or RS2 of the ID Controller is ON, which informs the PC that the DC
write operation has been completed.
1. The ERR line will be OFF.
2. The error code, as the response from lines RD0 to RD7, is returned to the
PC.
Error code
70 DC communications error
71 Disagreement error
72 DC not present
7A Address too high
7B Low battery warning
7C R/W Head not connected
7D Write protect error
Note See 6-3 Error Lists for details on the errors.
• See 3-2-4 SRAM Data Carrier Battery Check for details on the low battery
warning.
• The ERR line will be OFF when battery voltage is low, and the ID Controller
treats it as an error.
The ERR line turns ON at the time of normal termination and turns OFF when
there is an operation error.
Lines RS1 and RS2 inform the PC that response data has been sent by com-
mand execution.
By changing the host strobe line (HS) while the command execute line (CEXE) is
ON, the ID Controller will execute the process specified by the command (C0 to
C2) lines, address (AD0 to AD7) lines, and write data (WD0 to WD7) lines.
CPU retrieve signal
into ID Controller
Retrieval delay after the change of the HS line: td(1)
HS
CEXE
CO to C2
AD0 to AD7
WD0 to WD7
Type of delay
Section
Error
td(1)
Min.
0.5 ms 1.5 ms
3-5
Max.
27