Data Sheet

Address space per module
● Inputs
8byte
Interface types
RS 485
● Transmission rate, max.
115.2kbit/s
● Cable length, max.
1200m
RS 422
● Transmission rate, max.
115.2kbit/s
● Cable length, max.
1200m
● 4-wire full duplex connection
Yes
● 4-wire multipoint connection
No
Protocols
Integrated protocols
Freeport
— Telegram length, max.
4kbyte
— Bits per character
7 or 8
— Number of stop bits
1 or 2 bit
— Parity
None, even, odd, always 1, always 0, any
3964 (R)
— Telegram length, max.
4kbyte
— Bits per character
7 or 8
— Number of stop bits
1 or 2 bit
— Parity
None, even, odd, always 1, always 0, any
Modbus RTU master
— Address area
1 to 247, extended 1 to 65535
— Number of slaves, max.
32
MODBUS RTU slave
— Address area
1 to 247, extended 1 to 65535
Telegram buffer
● Buffer memory for telegrams
8kbyte
● Number of telegrams which can be buffered
255
Interrupts/diagnostics/status information
Diagnostics function Yes
Alarms
● Diagnostic alarm
Yes
● Hardware interrupt
No
Diagnostic messages
● Wire-break
Yes
Diagnostics indication LED
● RUN LED
Yes; Green LED
6AG1541-1AB00-7AB0 Subject to change without notice
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09/16/2019 © Copyright Siemens