Chapter 6. Download Function - Sharp ER-A460 Service Manual

CHAPTER 6. DOWNLOAD
FUNCTION
1. General
RAM data can be transmitted in the following two methods.
Save the data before servicing as follows:
1 ECR ↔ ECR
ECR
2 ECR ↔ ER-02FD
ECR
Note: The ONL lamp on the display blinks during IR transmission.
If the ONL lamp goes off during transmission, it shows that
transmission is interrupted by a shift in the optical axis and
retrying process is being performed. To resume
transmission, adjust the optical axis. If the ON lamp blinks,
transmission is resumed.
2. Communication between ECRs
1) The pop-up display of the ER-A460/A470 is equipped with the IR
interface. Set the distance between IR interfaces within 75cm.
Communication between ECRs is available in the ASK system
and in the IRDA system.
Note: Set the memory size (JOB #971) and the transmission
baud rate (JOB #903) in the receive side and the send side
identically.
•
ECR to ECR
| : Enable : Disable
Baud rate (bps)
2400
4800
9600
19200
38400
57600
115200
0
x
ABCD
903
Baud rate setting
1. Baud rate (bps)
2400
4800
9600
19200
38400
57600
115200
ECR
CE-IR2 or
ER-02FD
CE-IR4
ASK IrDA
| |
| |
| |
| |
| |
| |
|
TL
903-A
2
3
4
5
6
7
8
2) Communication sequence
1 Set the receiving ECR ready to receive.
998 x
2 Set the sending ECR.
996 x
X: SSP data = 0
3) Transmission status.
Description of error status
1: Application error (Command error)
2: Line error (DTR OFF)
3: Application error (Parity error)
4: Application error (Check sum error)
5: Application error (Data size error)
6: Hard ware error
7: Power off error
10: Time out error
11: Application error (Transmit data size error)
12: Application error (Block sequence error)
13: Memory full error
4) Service reset the receiving ECR.
3. Communication between an ECR and
the ER-01FD/02FD
1) The ER-A460/A470 can perform IR communication by connecting
the IR interface (CE-IR2/IR4) to the FD unit (ER-01FD/02FD). The
transmission is made only in the ASK system.
2) ER-01FD/02FD ROM replacement
To perform IR communication with the ER-01FD or the ER-02FD,
the control ROM must be replaced.
New control ROM version for IR communication
ER-01FD
ER-02FD
3) Connection between the ER-01FD/02FD and the CE-IR2/IR4
Make the connection cable and connect the FD unit and the IR
interface.
Connection cable wiring
ER-01FD/02FD side
1 Frame Ground
2 SD
3 RD
4 RS
5 CS
6 DR
7 Signal Ground
20 ER
DB-25 MALE CONNECTOR
– 39 –
TL
: ASK system
ST
: IRDA system
All data
TL : ASK system
X
ST : IRDA system
Version No. Parts code
R261C VHI27256R261C
RAG1D VHI27256RAG1D
CE-IR2/IR4 side
Frame Ground
TXD
RXD
RS
Signal Ground
DB-25 MALE CONNECTOR
1
2
3
4
5
6
7
20