NEW BRUNSWICK SCIENTIFIC BioFlo 415 Manual To Operations page 53

Table 4: AFS/Modbus Com Port Pin Designation
Pin Number
1, 4-6, 8-11,
14-20, 22-23
2
3
7
12
24
13
25
21
Unless otherwise requested, the baud rate is factory-selected at 9600 (AFS) or 19200
(Modbus) and the connector is configured as an RS232 port: i.e., no jumper between
pin #7 and pin #21. The factory-set address for the machine is 8.
New Brunswick Scientific
Signal
NC not assigned
TXD RS232 Data Output from fermentor
RXD RS232 Data Input to fermentor
GND Ground reference for all signals
IRXD+
RS422 paired data input to fermentor
IRXD-
ITXD+
RS422 paired data output from fermentor
ITXD-
Open selects RS232
IOS
Grounded selects RS422
Comments
User's Guide
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