Mitsubishi Electric FX5-DP-M User Manual page 144

Slave status area (Normal communication detection)
■Slave status area (Normal communication detection) (Un\G23040 to Un\G23043)
This area stores the communication status of DP-Slaves.
Turning off 'Data exchange start request signal' (Un\G2.b0) causes all the information in 'Slave status area (Normal
communication detection)' (Un\G23040 to Un\G23043) to be cleared.
• 0: A data exchange error has occurred or no data have been exchanged (including reserved stations, temporarily reserved
stations, and not-configured stations)
• 1: Data are being exchanged
Address b15
Un\G23040 16
Un\G23041 32
Un\G23042 48
Un\G23043 64
The values in the table indicate which number of DP-Slave each bit represents.
Turning on 'Data exchange start request signal' (Un\G2.b0) updates information in 'Slave status area (Normal communication
detection)' (Un\G23040 to Un\G23043) and turns on bits for the DP-Slaves that are exchanging data.
'Data exchange start request signal'
(Un\G2.b0)
'Slave status area (normal data exchange
detection)' (Un\G23040 to Un\G23043)
Occurrence of data exchange error at a DP-Slave turns off the relevant bit, which is turned on again after the recovery.
'Data exchange start request signal'
(Un\G2.b0)
'Slave status area (normal data exchange
detection)' (Un\G23040 to Un\G23043)
 A data exchange error occurs
 The data exchange error is recovered
Bits in Slave status area are assigned in the order of parameters configured with PROFIBUS Configuration
Tool (order of FDL address).
Modifying the parameters with PROFIBUS Configuration Tool (adding or deleting a DP-Slave) causes the
buffer memory areas to be reassigned. Review the program after modifying the parameters.
APPX
142
Appendix 3 Buffer Memory
b14 b13 b12 b11
15 14 13 12
31 30 29 28
47 46 45 44
63 62 61 60
ON
OFF
0H
ON
OFF
0H
b10 b9 b8 b7
11 10 9 8
27 26 25 24
43 42 41 40
59 58 57 56
1H
 
1H 0H
b6 b5 b4 b3
7 6 5 4
23 22 21 20
39 38 37 36
55 54 53 52
OFF
0H
OFF
1H 0H
b2 b1 b0
3 2 1
19 18 17
35 34 33
51 50 49