IAI America TTA - Manual (Page 7)

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1. Overview
This specification covers the communication protocol between the host and SEL controller (see the cover page for applicable
models).
The SEL controller can communicate with the host in the AUTO mode via a PC connector or teaching connector using this
protocol by setting "I/O parameter No. 90: Usage of user-open SIO channel xx" (xx: see *) to 2 (IAI protocol B (slave)). (To which
connector, a PC connector or teaching connector, to be connected varies with the controller. Refer to 2, “Transmission Control
Procedure" for details.)
* xx in "I/O parameter No. 90: Usage of user-open SIO channel xx" above denotes a channel number as follows.
Controller Channel No.
X－SEL (P/Q/PCT/QCT/PX/QX/R/S/RX/SX/RXD/SXD)
SSEL/ASEL/PSEL
Channel 0
X－SEL（J/K/KE/KT/KET/JX/KX/KTX）, TT, TTA Channel 1
The communication conditions are summarized in the table below. (For details on RS232C interface, refer to the operation
manual for the controller.)
Item Communication condition Setting parameter (*1)
Communication interface RS232C
Communication speed
9.6 kbps, 19.2 kbps, 38.4 kbps
57.6 kbps, 115.2 kbps (*2)
“I/O parameter No. 92”
Data length 7 bits, 8 bits “I/O parameter No. 93”
Stop bit length 1 bit, 2 bits “I/O parameter No. 94”
Parity None, odd, even “I/O parameter No. 95”
*1 A desired communication condition for each item can be selected by parameter setting.
*2 57.6kbps and 115.2kbps can only be set on X-SEL (P/Q/PCT/QCT/PX/QX/R/S/RX/SX/RXD/SXD),
SSEL/ASEL/PSEL and TTA.