-BL2LN87SB02D*CC20 12/20-
Variable
Description
4
3
2
1
6
5
0
Normal
OFF
-
-
ON
ON
-
-
-
ALM bit 1
OFF
I/O power supply drop
Slave unit voltage drop
I/O short-circuit
ON
Disconnection of CH1
Disconnection of CH0
ON
ON
ALM bit 0
ON
-
-
OFF
OFF
-
-
-
ALM bit 1
ON
OFF
OFF
OFF
ALM bit 0
Normal
OFF
ON
ON (0.25 sec.)
⇔
OFF (0.25 sec.)
ON (1 sec.)
⇔
OFF (1 sec.)
ON (1 sec.)
⇔
OFF (1 sec.)
ON (1 sec.)
⇔
OFF (1 sec.)
ON (1 sec.)
⇔
OFF (1 sec.)
-
ALM bit 1
OFF
I/O power supply drop
Slave unit voltage drop
I/O short-circuit
ON
Disconnection of CH1
-
Disconnection of CH0
ON (0.25 sec.)
⇔
OFF (0.25 sec.)
ALM bit 0
ON
OFF
OFF (0.25 sec.)
⇔
ON (0.25 sec.)
OFF (1 sec.)
⇔
ON (1 sec.)
OFF (1 sec.)
⇔
ON (1 sec.)
OFF (1 sec.)
⇔
ON (1 sec.)
OFF (1 sec.)
⇔
ON (1 sec.)
-
ALM bit 1
ON
OFF
-
OFF (0.25 sec.)
⇔
ON (0.25 sec.)
ALM bit 0
OFF
Normal
OFF
ON
I/O power supply drop
ON
ON
Slave unit voltage drop
ON
ON
I/O short-circuit
ON
ON
Disconnection of CH1
-
-
ALM bit 1
Disconnection of CH0
ON
ALM bit 0
When ALM bit is normal: OFF mode
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
-
-
ALM bit 1
OFF
ALM bit 0
When ALM bit is normal: ON mode
When ALM bit is normal: OFF mode
When ALM bit is normal: ON mode
When ALM bit is normal: OFF mode
When ALM bit is normal: ON mode
Alarm notification OFF
Notification by differentiating disconnected CH (When ALM bit is normal: OFF mode)
Notification by differentiating disconnected CH (When ALM bit is normal: ON mode)
Notification by differentiating disconnected CH and short-circuit/power supply drop (When ALM bit is normal: OFF mode)
Notification by differentiating disconnected CH and short-circuit/power supply drop (When ALM bit is normal: ON mode)
Notification by differentiating sensor cable error/voltage drop (When ALM bit is normal: OFF mode)
Notification by differentiating sensor cable error/voltage drop (When ALM bit is normal: ON mode)
When this unit is disconnected from the trunk line of the AnyWireASLINK system (at occurrence of
DP-DN disconnection), input signals and ALM bits are all turned OFF.
In the ALM bit normal-ON mode, ALM bits are ON in normal status, and at occurrence of DP-DN
disconnection, ALM bits are OFF. Thus, this function enables monitoring of trunk line disconnection.
Factory setting: 0
Key point
At occurrence of I/O disconnection, the ALM bit corresponding to a disconnected channel is alternately turned ON and OFF for
0.25 seconds each.
At occurrence of I/O short-circuit, both ALM0 and ALM1 are turned ON. At occurrence of voltage drop, both ALM0 and ALM1 are
alternately turned ON and OFF for 1 second each.
■
Alarm information notification pattern setting
[Equipment parameter 13]
◆
Notification by differentiating sensor cable error/voltage drop
◆
Notification by differentiating disconnected CH and short-circuit/power supply drop
◆
Notification by differentiating disconnected CH
This parameter is used to output detected alarm information (I/O disconnection, I/O short-circuit, slave unit voltage drop, I/O power
supply drop) into the bit input information area. To set this parameter, select one of six patterns. Alarm information bits are two bits.
Contents of information vary depending on the notification pattern.
Priority of alarm events is fixed in the order of “slave unit voltage drop”
→
“I/O short-circuit”
→
“I/O disconnection”
→
“I/O power
supply drop.” When several alarm events are simultaneously detected, an alarm event with higher priority is notified.
At occurrence of I/O disconnection, the ALM bit corresponding to a disconnected channel is turned ON.
At occurrence of I/O short-circuit or voltage drop, both ALM0 and ALM1 are turned ON.
At occurrence of I/O disconnection or I/O short-circuit, ALM0 is turned ON.
At occurrence of voltage drop, ALM1 is turned ON.
