
11. TROUBLESHOOTING
B–63525EN/02
762
#7
RMS0135
#6 #5 #4 #3
R42
#2
PRA
#1
ETX
#0
ASC
#7(RMS) In protocol A, status of remote / tape operation of SAT command is
0 : Always transmitted by 0.
1 : Transmitted by the contents of remote / tape switching request issued
by SET command from the CNC.
#3(R42) 0 : Interface is of RS–232C.
1 : Interface is of RS–422.
#2(PRA) 0 : Communication protocol is protocol B
1 : Communication protocol is protocol A
#1(ETX) 0 : End code of protocol A or extended protocol A is CR of ASCII/ISO.
1 : End code of protocol A or extended protocol A is ETX of ASCII/ISO.
#0(ASC) 0 : All the communication codes except for NC data is ISO code.
1 : All the communication codes except for NC data is ASCII code.
(b)External I/O device or Host computer is in trouble
(i) Check whether the setting on communication of external I/O
device or host computer is the same as that of the CNC. (baud
rate, stop bits,etc.) If they are not the same, change the setting.
(ii) When spare I/O device presents, check whether it is possible to
realize communication using the spare I/O device.
(c) Spindle module or communication control module is faulty
(i) When parameter no.0020 is 0 or 1 or 2 (JD36A,JD36B of Main
CPU board) Replace the module since spindle module may be
faulty.
(ii) When parameter no. 0020 is 3 (JD28A,JD6A of option 1 board)
Because communication control module (5) may be faulty,
replace the module.
(d)Cable between NC and I/O device is faulty.
Check the cable for disconnection or wrong connection.
<Connection>
Tape reader
Host computer
Mother board
R232C(JD36A)
Punch panel
R232C(JD36B)
Serial
communication
R232C(JD28A/JD5L)
R232C(JD6A/JD6L)
Host computer