Toshiba PROSEC T1 T1S, 6F3B0250 user manual T1S communication function, Computer link mode

6F3B0250

1. System Configuration

1.7 T1S communication function

The T1S has an RS-485 muiti-purpose communication port. This port can work independent of the programmer port.

By using this communication port, one of the following three communication modes is available, computer link mode, data link mode and free ASCII mode.

For details of these functions, refer to the separate manual “T1/T1S User’s Manual - Communication Function -”.

Item	Computer link		Free ASCII	Data link
Interface	Conforms to RS-458 (4-wire or 2-wire)
Transmission system	Half-duplex
Synchronization	Start-stop system (asynchronous)
Transmission code	ASCII/binary		ASCII	Binary
Transmission speed	300, 600, 1200, 2400, 4800, 9600, or			19200 bps (fixed)
	19200 bps
Transmission distance	1 km max.
Framing	Start bit:	1 bit		Special
	Data bits:	7 or 8 bits
	Parity:	Odd, even, or none
	Stop bit:	1 or 2 bits
Protocol	T-series		User defined	Special
	computer link		ASCII messages
	(ASCII),
	Programmer
	(binary)
Link configuration	1-to-N		N/A	1-to-1
Transmission delay	0 to 300 ms		N/A	N/A
option

Computer link mode

T-series computer link protocol can be used in this mode. A maximum of 32 T1Ss can be connected to a master computer.

By using this mode, all the T1S’s data can be accessed by a master computer. The T-series PLC programming software (T-PDS) can also be used in this configuration.

Master Computer

RS-485 (1 km max.)

T1

T1

T1

T1

Max. 32 T1Ss

34 T1/T1S User’s Manual

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