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Serial Communications Section 6-1
Refer to the Instructions Reference Manual (Cat. No. O011) for more details
on the TXD(236) and RXD(235) instructions.
System Setup RS-232C Settings (Host Link Port Settings)
Note The settings are made using CX-Programmer Ver. 5.0@ menus.
6-1-3 NT Link (1:N Mode)
With the FQM1, communications are possible with PTs (Programmable Ter-
minals) using NT Links (1:N mode).
Note Communications are not possible using the 1:1-mode NT Link protocol. Also,
the standard baud rate must be used.
The settings can be made using System Setup and the PT system menu.
System Setup
PT System Menu Set the PT as follows:
1,2,3... 1. Select NT Link (1:N) from the Comm. A Method or Comm. B Method on
the Memory Switch Menu in the System Menu on the PT.
2. Press the SET Touch Switch to set the Comm. Speed to Standard. High-
speed communications are not possible.
Transmission
delay time
Transmission
TXD(236) instruction
Time
Item Setting Default Enabled
Mode RS-232C Host Link Each cycle
Delay 0 to 99,990 ms (unit: 10 ms) 0 ms
End Code 00 to FF hex 00 hex
Start Code 00 to FF hex 00 hex
Received bytes 1 to 255 bytes 256 bytes
Use of end code Received bytes or CR+LF Received bytes
Use of start code None None
Communi-
cations
port
Name Settings
contents
Default Other
conditions
Peripheral
port
Mode NT Link (1:N
mode)
Host Link Turn ON pin 2
on the Coordi-
nator Module
DIP switch.
Baud Standard NT
Link
Standard NT
Link
NT Link max. 0 to 7 0 ---
RS-232C
port
Mode NT Link (1:N
mode)
Host Link ---
Baud Standard NT
Link
Standard NT
Link
NT Link max. 0 to 7 0 ---