1 OVERVIEW
1.3 About Added/Changed Functions in Function Version B
The table below lists the functions that have been added or changed in the Q series C24 of function version B.
See Section 2.6 for the function version, serial NO. and software version of products (CPU module, GX Developer, GX
See Appendix 1.1 concerning a comparison of functions in the different Q series C24 function versions.
Function | QJ71C24N | QJ71C24 | Outline of function | Reference section | |
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Simultaneous connection of |
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| This function allows access to the PLC from a PC with GX Developer and a | Section 1.2 of | |
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| GOT connected to two different interfaces of the Q series C24 at the same | User’s Manual | ||
GX Developer and GOT |
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| time. | (Basic) | ||
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Control of RS and DTR |
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| This function allows the control of the on or off state of the RS and DTR | Remark of section | |
signal states |
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| signals with the PLC program. | 3.2.1 | |
Support for 230,400 bps |
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| This function allows data communication with an external device at a | Chapter 4 of | |
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| transmission speed of 230,400 bps. | |||
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| User’s Manual | ||
Data transmission/reception |
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| This function allows data communication with an external device at a | ||
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| (Basic) | |||
at low speed |
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| transmission speed of 50 bps. | ||
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Clearing reception data by a |
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| This function allows clearing reception data using the CSET instruction | Chapter 6, Section | |
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| during data communication using the non procedure protocol. | 9.8 of User’s | ||
dedicated instruction |
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| It is possible to clear the data even when data is being transmitted. | Manual (Basic) | ||
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Transmission of the PLC |
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| When the PLC CPU monitoring function is active, this function sends the | Chapter 2 of | |
CPU monitoring information |
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| monitoring information of the PLC CPU to the external device through the | User’s Manual | ||
through combined use of the |
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| modem. | (Application) | ||
modem function |
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| This function allows data communication after the external device |
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| completes the unlock processing of the remote password set at a QCPU. It | Chapter 3 of | |
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| is executed when the QCPU is accessed from a remote location using the | User’s Manual | |
Remote password check |
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| modem function of the Q series C24 in the following forms of data | (Application) | |
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| communication: | Section 3.18 of | |
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| • Communication using the MC protocol | Reference Manual | |
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| • Communication using GX Developer |
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Automatic initialization for |
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| Initializes the modem automatically when Q Series C24 starts up. |
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modem |
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| Chapter 3 of the | ||
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| After line connection from the GX Developer, access to the QCPU from the | ||
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| User’s Manual | ||
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| GX Developer is made possible through line reconnection from the Q Series | ||
Callback |
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| (Application) | ||
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| C24 (callback). Transmission costs after line connection from the Q Series | |||
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| C24 side are borne by the Q Series C24 side. |
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Addition of non reception |
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| This function allows messages to be received in the non reception protocol | Chapter 6 of | |
monitoring time format in |
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| by | User’s Manual | |
non procedure protocol |
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| complete code and received data count have been not determined. | (Application) | |
Transmission control |
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| This function allows the designation of the available capacity of the OS area | Chapter 7 of | |
start/end free area |
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| that notifies the data reception failure at the time of transmission control | User’s Manual | |
designation |
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| (DTR/DSR signal control and DC code control). | (Application) | |
Addition of changeable data |
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to the user frame |
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| These functions allow the following codes to be registered as the | Chapter 9 of | |
(05H, 0BH, 11H, 17H) |
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| changeable data of user frames for data communication. | ||
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| User’s Manual | |||
Addition of changeable data |
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| • Horizontal parity code | ||
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| (Application) | |||
to the user frame |
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| • Sum check code of | ||
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(04H, 0AH, E5H, EBH) |
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| This function allows reception of a message consisting of the head frame |
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Adding a reception function |
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| and any data field when receiving data by specifying the head frame. | Chapter 11 of | |
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| The data length of the data field can be specified freely for each | |||
through the use of user |
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| User’s Manual | ||
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| combination of user frames for reception set by the user. | |||
frames |
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| (Application) | ||
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| (Receiving 1 byte providing ACK/NAK only is also possible by setting the | |||
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| data length of the data field to “0.”) |
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1 - 10 | 1 - 10 |