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1. OUTLINE EO10-33013B
(Revision Date: Jan. 22, 2009)
1.5 ELECTRONICS SPECIFICATIONS
1- 7
Specification of the MAIN4 PC Board
Hardware Software
Model
Flash ROM RAM
Kanji ROM
(IC7)
Kanji Font
Registry
area size
Program
area size
B-SX5T-TS22-QM-R 16MB → 32MB
B-SX4T-GS20-QM-R 8MB → 16MB
SP40II-R 8MB → 16MB
None
B-SX5T-TS22-CN-R 16MB → 32MB
B-SX4T-GS20-CN-R
4MB → 8MB
8MB → 16MB
None → 8MB
Simplified
Chinese
896KB
↓
3072KB
2304KB
↓
4096KB
Except for the memory capacity, the specification of the MAIN4 PC board is equivalent to that of the
MAIN3 PC board. However, the firmware V5.0 and greater (Main program V5.0, Boot program V3.0) is
installed into the MAIN4 PC board only.
3) Interface
(1) RS-232C interface
c Communication mode: Full-duplex
d Transmission speed: 2400,4800,9600,19200, 38400, 115200 bps (selectable)
e Synchronization: start-stop synchronization
f Transmission parameter
Parity: None, EVEN, ODD
Start bit: 1-bit
Stop bit: 1-bit or 2-bit
Word length: 7-bit or 8-bit
g Error detection
Parity check: VRC (Vertical Redundancy Checking)
Framing error: This error occurs when no stop bit is found in the frame specified
starting with the start bit.
h Data entry code: ASCII, 8-bit code for European characters, 8-bit code for graphic
i Receiving buffer: B-SX4T: 1MB, B-SX5T: 6MB
j Protocol
XON/XOFF (DC1/DC3) protocol
• When initialized after power on, this printer becomes ready to receive data and sends an
XON code (11H). (Transmission or non-transmission of XON code is selectable by means of
the parameter setting.)
• The printer sends an XOFF code (13H) when the free area in the receive buffer becomes
10K Bytes or less.
• The printer sends an XON code (11H) when the free area in the receive buffer are 512KB or
more.
• When there is no free area in the receive buffer, the printer discards received data which
exceeds the receive buffer capacity without storing it in the buffer. (After detecting the XOFF
code, the host computer must stop transmission before the printer receive buffer becomes
full.)
• The printer sends an XOFF code (13H) at power off time. (Transmission or non-transmission
of XOFF code is selectable with the parameter setting.)
• The DTR signal is always “High” level (Ready).
• The RTS signal is always “High” level (Ready).
READY/BUSY (DTR) protocol
• When initialized after power on, this printer becomes ready to receive data and converts the
DTR signal to "High" level (READY).
• The printer converts the DTR signal to "Low" level (BUSY) when the free area in the receive
buffer amount to 10K bytes or less.
• The printer converts the DTR signal to "High" level (READY) when the free area in the
receive buffer amount to 512KB or more.
• When there is no free area in the receive buffer, the printer discards received data which
exceeds the receive buffer capacity without storing it in the buffer. (After detecting a BUSY
signal, the host computer must stop transmission before the printer receive buffer becomes
full.)
• The RTS signal is always “High” level.