Built-in rs-485 communication port (cont’d), Free ascii mode, Data link mode – Toshiba T1S User Manual
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Built-in RS-485 Communication Port (cont’d)
Free ASCII mode
In this mode, user defined ASCII messages can be transmitted and received, A terminal, printer, bar
code reader, or other serial ASCII device can be directly connected to the T1S, This mode allows the
T1S to communicate with other PLCs (T1, T2E, T2N, etc.), Inverters (VF-S7/A5, G3), motor protection
relays (S2E21), and other devices with a simple ASCII read/write protocol.
T1S
RS-485 2-wire system is also possible.
RS-485 (1 km max.)
Bar-code reader
Printer, etc.
T1
T1
Inverter VF-S7
Motor Protection Relay
S2E21
Data link mode
In this mode, two (2) PLCs (any combination of T1S, T2E orT2N) can be directly linked together. This
direct link is inexpensive, easily configured and require no special programming. Data registers DOOOO
to 00031 are used for the data transfer.
T1S
RS-485 (1 km max.)
T1S
Station No.t
DOOOO
D0015
DQ016
D0031
Station No.2
DOOOO
*
D0016
D0016
D0031