User's Manual

How to Install the ISONAS IP-Enabled Reader-controller 28
2.2.9: USING THE TTL LEADS
The TTL1 and TTL2 leads are logical output leads. In their “normal” state, there is a
5VDC potential on the leads. When the leads “activate”, this voltage potential is
removed (0 VDC.
These leads are typically used to connect to an alarm system. Certain abnormal
conditions of the reader-controller can be configured to activate these leads. An
example would be having TTL2 activate when the door is held open too long.
See the Crystal Access Software manual for more information on the usage of these
leads.
2.2.10: USING THE POWERNET’S RS-232 INPUT
The pigtail’s RS-232 signal leads (Yellow & White) can be connected to an external
device that will pass a credential ID to the PowerNet.
The most common usage is:
 To pass in a 2 to 9 character long ASCII data string.
 Only Numeric ASCII values are allowed in the string (“0” to “9”).
 Delimiter characters are typically used at the beginning and/or end of the
message.
The serial connection’s default configuration is:
 9600 Baud (Adjustable w/ PlugNPlay [9600, 19200, 38400, 57600])
 8 Data Bits
 N Parity (Adjustable w/ PlugNPlay [N, E, O])
 1 Stop Bit
 N Hardware flow control