Panasonic FP-M Hardware, Руководство пользователя

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Construction of DT9121
The status of the high-speed counter board can be monitored in this area.
*1. Output disable input:
This input disables external output even if the high-speed counter is set to the output enable mode by DT9120.
While this input is turned ON, the output of the high-speed counter board is not changed even if the elapsed value
becomes equal to the target.
*2. Error codes
A BCD error is detected only when data for the high-speed
counter board is set to BCD operation using F0 (MV) and bit
position 7 of DT9120.
11 8 3 0 15
• •
12
• • • •
7 4
• •
Bit position
Data
CH0 Flag bit for “reset enable input
(RST.E0 terminal)”
[1: ON (reset enabled)]
CH0 Flag bit for “output disable input
(O.INH0 terminal)”
*
1
0: OFF (output enabled)
1: ON (output disabled)
CH1 Flag bit for “reset enable input
(RST.E1 terminal)”
[1: ON (reset enabled)]
0 0
CH0 This flag turns ON when
“Target 0 = elapsed value”
CH0 This flag turns ON when
“Target 1 = elapsed value”
Error code * 2
    
Error flag
(1: an error occurs)
0
CH1 This flag turns ON when
“Target 0 = elapsed value”
CH1 This flag turns ON when
“Target 1 = elapsed value”
CH1 Flag bit for “output disable input
(O.INH1 terminal)”
*
1
0: OFF (output enabled)
1: ON (output disabled)
155
7-5. High-speed Counter Board
Bit position Description
11
0
0
0
1
10
0
0
1
0
9
0
1
0
0
8
1
0
0
0
BCD error
CH0 overflow/underflow
CH1 overflow/underflow
Watchdog timer error