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7 DATA LINK PROCEDURE
MELSEC-QnA
7.7.4 Condition setting
The setting method of the condition setting switch (DIP switch) is shown in Table 7.2.
Table 7.2 Condition setting
Setting
Number Description Switch status
Master station Local station
SW1 Station type
OFF : Master/local station
ON : Standby master station
OFF (station number 0) OFF (station number 1 to 64)
SW2 (Unusable) – Always OFF
SW3 (Unusable) – Always OFF
OFF
When setting all input data from the data-link faulty station to all off. (Refer
to Section 4.9.)
SW4
Input data
status of the
data link
faulty
station
OFF : Clear
ON : Hold
ON
When keeping the input data from the data-link faulty station in the status
right before the error. (Refer to Section 4.9.)
Number of
occupied
stations
SW5 SW6 –
1 station OFF OFF
• Remote input RX : 32 points
• Remote output RY : 32 points
• Remote register RWw : 4 points
• Remote register RWr : 4 points
2 stations OFF ON
• Remote input RX : 64 points
• Remote output RY : 64 points
• Remote register RWw : 8 points
• Remote register RWr : 8 points
3 stations ON ON
• Remote input RX : 96 points
• Remote output RY : 96 points
• Remote register RWw : 12 points
• Remote register RWr : 12 points
SW5
SW6
Number of
occupied
stations
4 stations ON OFF
Setting not necessary (OFF)
• Remote input RX : 128 points
• Remote output RY : 128 points
• Remote register RWw : 16 points
• Remote register RWr : 16 points
SW7 (Unusable) – Always OFF
SW8 (Unusable) – Always OFF
The AJ61QBT11 of hardware version F or later and the A1SJ61QBT11 of hardware version G or later are compatible with this setting.
For other than the above, only SW5 is used to set the number of occupied stations.
OFF: 1 station occupied
ON : 4 stations occupied
Keep SW6 OFF as it is unusable.