239
8-5. System Registers
Note:
•
*
The system register 416 setting is available only for C24C, C40C, C56C, and C72C type FP1s with
CPU Ver. 2.7 or later. (All C24C, C40C, C56C, and C72C type FP1s with a suffix “B” on the part
number have this function.) To specify system register 416, NPST-GR Software version 3.1 or later is
required.
Address
414
415
416
417
Name of system register
Baud rate settings for
RS232C serial port
Station number settings
for RS232C serial port
Modem communication
settings for RS232C
serial port*
Starting address setting
for data received
from RS232C serial port
Default
value
K1
K1
H0
K0
Description
This register specifies the baud rate of the RS232C serial port.
• Settings
This register specifies the station number when the RS232C
serial port is used for computer link communication.
(Refer to system registers 412 and 413 on pages 237 and
238 for details about the computer link communication
settings.)
• Setting range
K1 to K32
The setting for modem communication compatibility is
performed when the RS232C serial port is used.
• Settings
H0: modem communication disabled
H8000: modem communication enabled
When modem communication is enabled, set system
registers 412, 413, 415. Refer to page 246, “8-8. FP1
Modem Communication”.
This register specifies the starting address of data registers
used as the buffer for data received from the RS232C serial
port when general-purpose communication is performed.
(Refer to system registers 412 and 413 on pages 237 and
238 for details about general-purpose communication
settings.)
• Setting range
C24C/C40C types: K0 to K1660
C56C/C72C types: K0 to K6144
EXAMPLE:
If K0 is input to system register 417, the number of bytes
received from the RS232C serial port is stored in DT0
and the data received are stored starting from DT1.
Set value
K0
K1
K2
K3
K4
K5
K6
Baud rate
19,200 bps
9,600 bps
4,800 bps
2,400 bps
1,200 bps
600 bps
300 bps
Summary of Contents for FP1
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