Sharp ER-A457 Service Manual

ER-A457
ONLINE COMMUNICA TION FUNCTION
CHAPTER 1. OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CHAPTER 2. SYSTEM CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . 1
CHAPTER 3. SPECIFICATIONS OF RS-232 INTERFACE . . . . . . . . . 2
CHAPTER 4. SIGNAL CONNECTION DIAGRAM. . . . . . . . . . . . . . . . . 2
CHAPTER 5. RS-232 PROTOCOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CHAPTER 6. CONTROL SIGNAL SEQUENCE . . . . . . . . . . . . . . . . . 11
CHAPTER 7. DATA BLOCK FORMAT . . . . . . . . . . . . . . . . . . . . . . . . 14
CHAPTER 8. ONLINE APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . 14
Parts marked with " " is important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
SERVICE MANUAL
ELECTRONIC CASH
REGISTER
MODEL
MODEL
CONTENTS
SHARP CORPORATION
ER-A457
(For "V" version)
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.