Mitsubishi Electric MELIPC MI5000 Series, User Manual

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APPX
Appendix 8 List of Link Special Registers
SW0062 Current link scan time The current link scan time value during cyclic transmission is stored. (Unit: ms)
A maximum margin of error of 1 ms is included in the stored value.
<Conditions>
Enabled when 'baton pass status' of own station (SB0047) is OFF. When 'baton pass status of own
station' (SB0047) is ON (error), the data immediately before is retained.
SW0064 Own station connection status Stores own station connection status.
■ 10H: Normal (Port 1 cable disconnection, Port 2 communicating)
■ 11H: Disconnected (Port 1 cable disconnection, Port 2 cable disconnection)
■ 12H: Disconnected (Port 1 cable disconnection, Port 2 line establishing)
SW0066 Actual link scan time (lowest 1 word) Stores the link scan time value during cyclic transmission. (Unit: μ s)
SW0067 Actual link scan time (highest 1 word)
SW006A Own station port 2 reception error
occurrence rate (maximum) Stores the maximum value of the occurrence rate of the error frame reception of own station Port 2.
(Units: %)
If 'clear communications error count' (SB0006) is ON, then the stored occurrence rate is cleared.
SW006B Own station port 2 reception error
occurrence rate (current) Stores the current value of the occurrence rate of the error frame reception of own station Port 2.
(Units: %)
If 'clear communications error count' (SB0006) is ON, then the stored occurrence rate is cleared.
SW006D Master operating station number Stores the master station's station number.
• 0: No sub master function settings
<Conditions>
Enabled when 'baton pass status' of own station (SB0047) is OFF. When 'baton pass status of own
station' (SB0047) is ON (error), the data immediately before is retained.
SW006E Sub master operating station number Stores the sub master station's station number.
• 0: No sub master function settings
<Conditions>
Enabled when 'baton pass status' of own station (SB0047) is OFF. When 'baton pass status of own
station' (SB0047) is ON (error), the data immediately before is retained.
SW007C Port 2 cable disconnection detection
count Stores the Port 2 cable disconnection detection accumulated count. If 'clear communications error
count' (SB0006) is ON, the stored count is cleared.
If the count reaches the maximum value of 65535 (FFFFH), the count returns to 0 then continues.
SW007D Port 2 received error detection count Stores the Port 2 error data received accumulated count. The stored count is only error data not
transmitted to all stations. If 'clear communications error count' (SB0006) is ON, the stored count is
cleared.
If the count reaches the maximum value of 65535 (FFFFH), the count stops.
SW007E Port 2 received data total count (lowest 1
word) The Port 2 data received accumulated count is stored. If 'clear communications error count' (SB0006)
is ON, the stored count is cleared.
If the count reaches the maximum value of 4294967295 (FFFFFFFFH), the count stops.
SW007F Port 2 received data total count (highest
1 word)
SW00A0
to
SW00A7 Baton pass status of each station Stores each station baton pass status.
• 0: Baton pass normal station
• 1: Baton pass faulty station
The numbers within the following illustration indicate the station numbers. (

: fixed at 0)
• In the case of multiple stations that have gone from fault to normal, concurrent processing is carried
per device out for each link scan, therefore there may be several seconds variation in the time
required until "0: Baton pass normal station".
• When making a line connect or ring connection, token loss or reorganization may occur by
removing and inserting, or resetting the cable, and baton pass status may detect an error within 1
link scan.
<Conditions>
• Enabled when baton pass status of own station (SB0047) is OFF. When 'baton pass status of own
station' (SB0047) is ON (error), the data immediately before is retained.
• The status is not stored for the reserved stations and the station numbers after the maximum station
number.
No. Name Description
b15 b0
16 15 14 13 12 5 4 3 2 1
32 31 30 29 28 21 20 19 18 17
SW00A0
112 111 110 109 108 102 101 100 98 97
- - - - - 117 116 115 114 113
SW00A1
SW00A6
SW00A7
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