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14. COMMUNICATION FUNCTIONS
14.7 Time-out operation
The master station transmits EOT when the slave station does not start reply operation (STX is not
received) 300[ms] after the master station has ended communication operation. 100[ms] after that, the
master station retransmits the message. Time-out occurs if the slave station does not answer after the
master station has performed the above operation three times. (Communication error)
E
O
T
300ms
100ms
E
O
T
300ms
100ms
E
O
T
300ms
100ms
300ms
Me
ss
ag
e
Me
ss
ag
e
Me
ss
ag
e
Me
ssa
ge
*Time-out
Controller
(Master station)
Servo
(Slave station)
14.8 Retry operation
When a fault occurs in communication between the master and slave stations, the error code in the
response data from the slave station is a negative response code ([B] to [F], [b] to [f]). In this case, the
master station retransmits the message which was sent at the occurrence of the fault (Retry operation). A
communication error occurs if the above operation is repeated and results in the error three or more
consecutive times.
M
e
ssage
Me
ss
ag
e
Me
ss
ag
e
*Communication error
Controller
(Master station)
Servo
(Slave station)
S
T
X
S
T
X
S
T
X
Station number
Station number
Station number
Similarly, when the master station detects a fault (e.g. checksum, parity) in the response data from the
slave station, the master station retransmits the message which was sent at the occurrence of the fault. A
communication error occurs if the retry operation is performed three times.
Summary of Contents for MR-J2S-*A
Page 13: ...WWW NNC IR A 12 MEMO ...
Page 117: ...WWW NNC IR 3 70 3 SIGNALS AND WIRING MEMO ...
Page 185: ...WWW NNC IR 7 12 7 GENERAL GAIN ADJUSTMENT MEMO ...
Page 195: ...WWW NNC IR 8 10 8 SPECIAL ADJUSTMENT FUNCTIONS MEMO ...
Page 197: ...WWW NNC IR 9 2 9 INSPECTION MEMO ...
Page 221: ...WWW NNC IR 11 10 11 OUTLINE DIMENSION DRAWINGS MEMO ...
Page 293: ...WWW NNC IR 13 64 13 OPTIONS AND AUXILIARY EQUIPMENT MEMO ...
Page 321: ...WWW NNC IR 14 28 14 COMMUNICATION FUNCTIONS MEMO ...
Page 389: ...WWW NNC IR 15 68 15 ABSOLUTE POSITION DETECTION SYSTEM MEMO ...