Unit 3: Interface Specifications

INFRARED RAYS (IRDA)

Infrared communications is based on technology which is similar to entertainment remote control devices used in homes today. This technology offers a convient, interoperable, low power, and reliable way to connect computer and printer without the use of cables. The half-duplex, serial data interconnection capabilities supports walk up point-to-point use.

The infrared tranmission of print data is transferred from the terminal to the printer in four phases:

(1) Connection, (2) Printer Status Check, (3) Data Transfer, (4) Disconnection.

The limitations of this interface type is that it requires a direct line of sight with a reading span of 30 degrees at a maximum distance of 7-8 inches (20cm). When the peripherals are aligned, they negociate and transmit/receive data between the two devices.

Default Parameters: DSW1 ON / DSW2-4 OFF.

 

IRDA SPECIFICATIONS (STANDARD PROTOCOL)

Baud Rate

 

9600, 19200, 38400, 57600, 115200

Data Bit Length

 

8

Stop Bit

 

1

Parity Bit

 

None, Odd, Even

Codes Used

 

ASC-II: 7 bit, Graphics: 8 bit.

Control Codes

 

STX (02h), SYN (16h), ETX (03h), DLE (10h)

Communication Time

 

Time-Out: 5.99 seconds, Retry: over 500 milliseconds.

Receiving Type

 

Single item.

Operations Mode

 

IrSIR v1.2

BHT protocol is the communication procedure used to transmit files between DENSO data collection devices by adopting the response method using the ACK/NAK codes defined for the use with these types of devices. Note the IrDA parameters must be set according to PDA/DCS methods and appropriately configured to direct data transmission to the printer. Refer to the IrDA command settings in the Programming Reference document for this printer, as well as, documentation provided by the manufacturer of the data collection device for the proper steps. The appropriate firmware must be installed to function.

 

IRDA SPECIFICATIONS (BHT PROTOCOL)

Baud Rate

 

9600, 19200, 38400, 57600, 115200

Data Bit Length

 

8

Stop Bit

 

1

Parity Bit

 

None, Odd, Even

Codes Used

 

ASC-II: 7 bit, Graphics: 8 bit.

Control Codes

 

SOH (01h), STX (02h), ETX (03h), EOT (04h), ENQ (05h), ACK

 

 

(06h), DLE (10h), NAK (15h).

Communication Time

 

Time-Out: 5.99 seconds, Retry: over 500 milliseconds.

Receiving Type

 

Single item.

SATO MB2i Service Manual

PN 9001145B

Page 3-5

Page 17
Image 17
SATO 200i manual Infrared Rays Irda, Irda Specifications Standard Protocol, Irda Specifications BHT Protocol