DS232-4 June ’04

©2004 Reg. No. 227 4001, ENGLAND

Page 11

232C-868FR1

R/W

S212

Parity

Indicates the parity on the serial link:

'1' -> No parity (default value)

'2' -> Even Parity

'3' -> Odd Parity

R/W

S213

Number of

Stop Bits

Number of Stop bits on the serial link:

'1' -> 1 Stop bit (default value)

'2' -> 2 Stop bits

R/W

S214

Time-out

Time-out in milliseconds on the serial link. Valid between 2 and 100

milliseconds.

Default value: 5 ms

R/W

S216

Flow Control

Indicates the flow control mode:

‘0’ -> RTS/CTS

‘2’ -> None (Default value)

R/W

S218

Buffer size

Indicates the maximum size of frames. When this maximum size is

reached, the modem switches the CTS signal.

Valid between 30 and 245 bytes.

Default value: 245 bytes

Operation

Access

Register

Name

Description

Indicates the operation mode of the modem.

'1'

->

Transparent (Default value)

'3'

->

Transparent Secured

'6'

->

Master I/O

'7'

->

Slave I/O

'9'

->

Addressed Secured

‘10’

->

Demo mode – master

R/W

S220

Operating

Mode

‘11’

->

Demo mode – slave

R/W

S221

Autorepeat

Indicates auto-repeat status in transparent mode (i.e. whether the

modem automatically replies a data frame)

’0’ -> Autorepeat off (Default value)

‘1’ -> Autorepeat on

R/W

S223

Number of

Retries

Indicates the maximum number of retries when a message contains

errors in secured mode. Valid between 0 and 255 (modulo 256). If the

value is ‘0’, frames are not checked and considered as good (used for

tests).

Default value: 2

Addressed Management

Access

Register

Name

Description

R/W

S250

Network

Number

Indicates the network number using 2 bytes. Only

members of the same network can communicate

together. Valid between 0 and 65535 (modulo 65536), it is set to ‘0’

when the modem is not initialised.

NB: Setting S250 to ‘0’ also sets S252 to ‘0’.

Default value: 0