Denso RC5 Specifications

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Denso RC5 Specifications | Manualzz

Chapter11 Configuring the RS-232C

Extension Board (Recommended Option)

If you install an RS-232C extension board to the robot controller, the controller may support three RS232C serial data transmission lines (One standard line plus two addon lines). The RS-232C should be set into extension slot #1 or #2.


Floppy disk drive (option)

Extension slot

#1 or #2

FG terminal

Robot stop button

Memory backup battery holder

Pilot lamps

Fuse box

Power switch Output IC box

11.1 Recommended RS-232C Extension Board

Set up an RS-232C extension board specified below in your charge.


Manufactured by



NOTE: To support an RS-232C extension board, the robot controller requires some special features to be built in at the factory. When placing an order for the robot controller, specify the RS-232C extension board support.

11.2 Installing the Extension Board

For the installation procedure, refer to Chapter 12, "Mounting Extension Boards."


11.3 Setting the Jumpers and DIP Switch on the RS-232C

Extension Board

Set the jumpers and DIP switch on the RS-232C extension board as shown below.

Jumper/DIP SW



Set selectors 1 and 3 to ON.


Set a jumper cap onto pin 14.


Set a jumper cap onto NC.


Seta a jumper cap onto NC.



1 2 3 4


9 3 4 5 6 7 10 11 12 14 15 NC


9 3 4 5 6 7 10 11 12 14 15 NC


9 3 4 5 6 7 10 11 12 14 15 NC


11.4 RS-232C Extended Serial Ports and Line Number


The RS-232C extension board features two COM ports--COM3 and COM4. Two serial data transmission lines #2 and #3 are assigned to COM3 and COM4, respectively.

COM4 (#3) COM3 (#2)

11.5 Communications Configuration of RS-232C Extension


Follow the procedure described below to configure communications feature of COM3 and COM4 on the RS-232C extension board.

n Setting the communication permission

Access: [F6: Set]—[F5: Set Com.]—[F1 Permit.]

CAUTION: COM3 and COM4 do not support data transmission with WINCAPSII.

Keep both of those ports "Disable" (Default).


n Setting the transmission rate for RS-232C serial interface ports

Access: [F6: Set]—[F5: Set Com.]—[F2 Serial IF]

Select each of the COM3 and COM4 and then press [F5 Change.] to the transmission rate, parity (None, Odd or Even) and other values.

NOTE: The default transmission speed for the RS-232C extension board is 19,200 bps. The maximum transmission speed is 38,400 bps.

If the transmission speed is set to 38,400 bps, however, a communications failure may occur frequently. Even at 19,200 bps, a communications failure may also occur due to electric noises or other interference.

In programming, therefore, you may need to use the com_state command for setting retry capabilities as shown in the coding sample below.


11.6 Coding Sample for Transmission Error Recovery

'!TITLE "<Title>"

PROGRAM sample




DEFPOS lp1(10)





li1 = 0




WHILE li1 < 10




INPUT #2,lp1(li1)

'Local position variable.

'Local integer variable.

'Initialize li1.

'Repeat pre-decision.

'Get data on line #2 into


'Get communication status into I280.

'If an error occurs, the value is –1.

'Output retry instruction.

com_state #2,I280

IF I280 < 0 THEN

PRINT #2,"R"


PRINT #2,"A" li1 = li1 + 1








'Output "normal receive".

'Repeat 10 times.

In the coding sample above,

It is assumed that " R " is a retry command that requires the external equipment to make retry operation and " A " is an acknowledge command for normal data reception.

11.7 Limited Warranty

DENSO WAVE provides the user with the communications function built in the controller for using the RS-232C extension board. It does not give you any warranty or technical support for the extension board itself.



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