Mitsubishi MELSEC LJ71C24, User Manual

Page: 35 / 428

3 - 7 3 - 7
3 SPECIFICATIONS
3.4 List of Input/Output Signals
This section describes the input/output signals of the C24.
The following I/O signal assignment is based on the case where the start I/O No. of the
C24 is "0000".
Device numbers starting with X indicate input signals from the C24 to the CPU module.
Device numbers starting with Y indicate output signals from the CPU module to the
C24.
The following table lists the input/output signals for the CPU module.
Device
number
Signal description Reference
Device
number
Signal description Reference
X0 1
CH1 Transmission normal completion
ON: Normal completion
Y0
CH1 Transmission request
ON: Requesting transmission
X1 1
CH1 Transmission abnormal completion
ON: Abnormal completion
Y1
CH1 Reception data read completion
ON: Data read completed
—
X2 1
CH1 Transmission processing
ON: Transmission in progress
—
Y2
CH1 Mode switching request
ON: Requesting switch User's Manual
(Application)
X3 2
CH1 Reception data read request
ON: Requesting read
Y3
CH1 Protocol execution request
ON: Requesting execution
—
X4 2
CH1 Reception abnormal detection
ON: Abnormal detection
Section 10.1
Section 11.1
Y4
X5 1
CH1 Protocol execution completion
ON: Execution completed
— Y5
X6 3
CH1 Mode switching
ON: Switching User's Manual
(Application)
Y6
Use prohibited —
X7 1
CH2 Transmission normal completion
ON: Normal Completion
Y7
CH2 Transmission request
ON: Requesting transmission
X8 1
CH2 Transmission abnormal completion
ON: Abnormal completion
Y8
CH2 Reception data read completion
ON: Data read completed
—
X9 1
CH2 Transmission processing
ON: Transmission in progress
—
Y9
CH2 Mode switching request
ON: Requesting switch User's Manual
(Application)
XA 2
CH2 Reception data read request
ON: Requesting read
YA
CH2 Protocol execution request
ON: Requesting execution
—
XB 2
CH2 Reception abnormal detection
ON: Abnormal detection
Section 10.1
Section 11.1
YB
XC 1
CH2 Protocol execution completion
ON: Execution completed
— YC
XD 3
CH2 Mode switching
ON: Switching User's Manual
(Application)
YD
Use prohibited —
XE
CH1 ERR. occurrence
ON: Error occurring
YE
CH1 ERR.clear request
ON: Requesting error clear
XF
CH2 ERR. occurrence
ON: Error occurring
Section 15.4
YF
CH2 ERR. clear request
ON: Requesting error clear
Section 15.4
X10
Modem initialization completion
ON: Initialization completed
Y10
Modem initialization request (standby request)
ON: Requesting initialization
X11
Dialing
ON: Dial in progress
Y11
Connection request
ON: Requesting connection
X12
Connection
ON: Connection in progress
Y12
Modem disconnection request
ON: Requesting disconnection
User's Manual
(Application)
X13
Initialization/connection abnormal completion
ON: Initialization/ connection abnormally completed
Y13
X14
Modem disconnection complete
ON: Disconnection completed
User's Manual
(Application)
Y14
X15 Y15
X16
Use prohibited —
Y16
Use prohibited —
X17 1 Flash ROM read completion ON: Completed Y17 Flash ROM read request ON: Requesting
X18 1 Flash ROM write completion ON: Completed Y18 Flash ROM write request ON: Requesting
X19
Flash ROM system setting write completion
ON: Completed
—
Y19
Flash ROM system setting write request
ON: Requesting
—