85
E3X-DRT21-S
User’s Manual
Section 4
APP
E
NDIX
Section 4
Communications Timing
■
Maximum Update Cycle of Detection level Data
The following tables list the maximum values for the update cycle of the detection level
monitoring when the Unit is operating with remote I/O communications in 2-channel
mode with the detection level monitoring mode (SW1 =OFF, SW2 = ON).
The maximum update cycle of the detection level monitoring depends on whether
Explicit messages are used and on the number of Sensors connected, as shown in the
tables below.
• When using Explicit Messages
Explicit messages are also used when a configurator is connected.
• When not using Explicit Messages
Normally, the update cycle of the detection level is much shorter than the values listed in the tables
above. However, the update cycles can be extended with some timings. Consider the maximum
refresh cycle when designing the system.
Number of
connected
Sensors
Maximum update cycle of
detection level monitoring (ms)
Number of
connected
Sensors
Maximum update cycle of
detection level monitoring (ms)
1
50
9
2300
2
100
10
2500
3
160
11
3000
4
240
12
3300
5
330
13
3600
6
430
14
4200
7
540
15
4600
8
670
16
4900
Number of
connected
Sensors
Maximum update cycle of
detection level monitoring (ms)
Number of
connected
Sensors
Maximum update cycle of
detection level monitoring (ms)
1
20
9
1500
2
40
10
1900
3
60
11
2000
4
90
12
2200
5
110
13
2300
6
140
14
2400
7
170
15
3000
8
200
16
3200
