Unit 3: Interface Specifications
SATO MB200 Operator Manual
PN 9001126A
Page 3-2
RS232 SERIAL INTERFACE
This High Speed Serial Interface is a Plug-In Interface Module that can be connected to the
printer by the user. The only difference between this interface and the TTL is their signal levels
and cable pinouts.
RS232C SPECIFICATIONS
Asynchronous ASCII
Half-duplex communication
Bi-Directional Communication
Data Transmission Rate
4800, 9600, 19200, 38400 bps
Data Length
8 bit (selectable)
Stop Bit
1 bit (fixed)
Parity Bit
ODD, EVEN, NONE (selectable)
Codes Used
ASC II Character Codes, JIS Kanji Codes
Control Codes
STX (02H), ETX (03H), ACK (06H), NAK (15H)
Connector
Special
Cable
Special
Signal Levels
High = +3V to +12V, Low = -3V to -12V
INTERFACE SIGNALS
PIN
DIRECTION
SIGNAL DEFINITION
1
Reference
SG (Signal Ground)
2
To Host
SD (Sending Data) - Data to the host computer from the printer.
3
To Printer
RD (Receive Data) - Data to the printer from the host computer.
4
---
Reserved
5
---
Reserved
6
Reference
SG (Signal Ground)
7
---
Reserved
8
---
Reserved
9
---
Reserved
10
---
Reserved
11
---
Reserved
12
Reference
SG (Signal Ground)