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APPX
Appendix 3 Buffer Memory
Communication path determination status
■
Communication path determination status (Un\G1260544 to Un\G1260559)
The determination information on the communication path for each network number of the destination station is stored.
• 0: Path undetermined
• 1: Path determined
The numbers in the table indicate network numbers.
Time synchronization
■
Time distribution interval setting of the CPU module (Un\G1275136)
The time distribution interval of the CPU module on the master station to slave stations is set (CPU No.1 when the multiple
CPU system is used). This setting is set to the buffer memory of the master station.
When the setting is changed, the new setting value is enabled after the interval of the distribution operating with the old setting
value has elapsed. The setting value is distributed once after the distribution interval elapses. If the new setting value needs to
be enabled immediately, stop the distribution and set the value.
• 0000H: 10s
• 0001H to FFFEH: Send using the set time interval (second)
• FFFFH: Distribution stop
(Default: 0000H)
■ Time reflection setting to the CPU module (Un\G1275137)
Whether the time of the CPU module distributed from the master station is reflected to the CPU module in the local station is
set(CPU No.1 when the multiple CPU system is used). This setting is set to the buffer memory of the local station.
* 1
• 0000H: Do not reflect the time to the CPU module.
* 2
• 0001H: Reflect the time to the CPU module.
(Default: 0000H)
*1 If 0001H is set to the buffer memory of the master station, the time distributed is not reflected to the CPU module in the local station
(CPU No.1 when the multiple CPU system is used).
*2 The time that was set to the CPU module on the local station is used for operation.
Grandmaster information
The grandmaster status of the own station and MAC address are stored.
■
Grandmaster (Un\G1275904)
When the own station is the grandmaster, "1" is stored.
• 1: Own station is the grandmaster
• 0: Another station is the grandmaster
■ Grandmaster MAC address (Un\G1275907 to Un\G1275909)
The grandmaster MAC address is stored.
• Un\G1275907: 5th byte, 6th byte of the MAC address
• Un\G1275908: 3rd byte, 4th byte of the MAC address
• Un\G1275909: 1st byte, 2nd byte of the MAC address
Address b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
Un\1260544 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

Un\1260558 Empty 239 238 237 236 235 234 233 232 231 230 229 228 227 226 225
Un\1260559 Empty