Filter
Top Products
3 - 11 3 - 11
MELSEC-Q
3 SPECIFICATIONS
3.4 Serial Communication Module Function List
The following table lists the functions of the Q series C24.
Function Reference section
Communication with QnA compatible 3C frame
Communication with QnA compatible 4C frame
Communication with QnA compatible 2C frame
Communication with
ASCII code
Communication with A compatible 1C frame
Formats 1 to 4
exist for each.
Communication with
binary code
Communication with QnA compatible 4C frame Format 5
Batch read/write in bit/word units
Monitoring of device memory
Batch read/write of multiple blocks
Read/write by extension designation
Read/write of device
memory
Accessing other stations via network system
Reading/writing from/to the buffer memory of the Q series C24
Reading/writing from/to the buffer memory of intelligent function modules
Reading/writing from/to sequence program files
Monitoring the PLC CPUs (PLC CPU monitoring function)
Status control of the PLC CPUs (remote RUN/STOP, etc.)
Turning on/off input signals of the Q series C24 from an external device (global function)
Communication
using MC protocol
(
1)
Data transmission from a PLC CPU to an external device (on-demand function)
Chapter 5
Reference Manual
Data transmission/reception in any format Chapter 6
Data transmission/reception using user frames
Data reception by interrupt programs
Monitoring the PLC CPUs (PLC CPU monitoring function)
ASCII data transmission/reception by ASCII-BIN conversion
Communication
using non
procedure protocol
(
2)
Data transmission/reception by specifying transparent code
User's Manual
(Application)
Data transmission/reception in any format Chapter 7
Data reception by interrupt programs
ASCII data transmission/reception by ASCII-BIN conversion
Communication
using bidirectional
protocol (
1)
Data transmission/reception by specifying transparent code
Communication with MC Protocol/non procedure protocol/bidirectional protocol
Communication via
public network, etc.
(modem function)
PLC access from GX Developer
DC code control (including Xon/Xoff control)
Transmission
control
DTR/DSR (ER/DR) control
User's Manual
(Application)
Independent/linked operation of each interface Section 4.5.2
Monitoring/testing of initial settings and setting values with utility software Chapter 8
Supporting multiple CPU system
Section 2.10 of
Reference Manual
Remote password check
Section 3.3.3 of
User's Manual
(Application)
1 If the external device is capable of incorporating a program and communicating
data using a protocol of the MELSEC PLC, it is possible to access the PLC CPU
using the above mentioned MC protocol. Furthermore, it is possible to transfer any
data using the bidirectional protocol.
2 When it is necessary to communicate using the protocol of an external device,
such as a measuring instrument or a bar code reader, the above-mentioned non
procedure protocol is used for data communication. In that case, the processing of
the communication data becomes easier by using the user frame communication
function.