The Allen-Bradley Compact 1769-ASCII module consumes 425 milliamps at 5 volts DC. The 1769-ASCII module offers a flexible network interface to a broad assortment of ASCII devices and provides them with communication connections. The ASCII module’s device interface channels are independent and completely isolated from each other and the backplane. Both channels can each offer three unique media to the interface through a serial device, and they are selected automatically by utilizing proper connections to the 9-pin D-sub connector which comes with each of the channels. Whichever media is actually selected will be transparent to the given 1769-ASCII module in use. The Allen-Bradley Compact 1769-ASCII module’s serial input voltage signal is 3…25 volts DC with respect to signal ground (SG) “0,” Asserted, ON, Space, Active. The module’s serial input voltage is -3…-25 volts DC with respect to signal ground (SG) “1,” Disasserted, OFF, Mark, Inactive. The 1769-ASCII has a max power dissipation of 2.13 watts. It is tested to withstand 710 volts DC for 60 seconds. The dimensions of this product are 87 x 34 x 118 mm. The serial port status for the 1769-ASCII module includes TX FIFO overflow, RX FIFO overflow, RX parity error, handshake error as well as new data flag. The produce assembly size and consume assembly size are each 108 words. The transmit transaction ID is 0…265. For this module, RTS/CTS hardware handshake is always enabled. The 1769-ASCII module has a surge transient immunity rating of IEC 61000-4-5: +2 kV line-earth (CM) on communications ports. The emissions of this module are rated CISPR 11: Group 1, Class A. 

This is the 1769-ASCII module by Allen-Bradley supports the MicroLogix 1500 and 1769 CompactLogix series of products. This unit is a specialty module supporting the ASCII protocol used by a variety of devices used in factory automation. This module has two (2) ASCII ports that are individually isolated. Either port may be configured differently and is able to communicate with different types of devices simultaneously. Port 1 may be used as RS-233 / RS-422 and Port 2 as RS-485 independently. Alternatively, the ports may also be configured in a dual simultaneous mode.

This module has a distance rating of 4 for the power supply. The 1769-ASCI has a serial input voltage signal of 3 to 25 volts DC on signal ground zero when operational. The input voltage signal is 3 to 25 volts DC on signal ground 1 when inactive. This unit has a bus current of 425 milliamperes at 5 volts DC and is rated for a maximum power dissipation of 2.13 watts.

The isolation voltage is 30 volts and it is rated to withstand 710 volts DC for up to one (1) minute. It is rated for a 5 G operating vibration at 10 hertz to 500 hertz, an operating shock of up to 30 G, and a non-operating shock limit of 50 G. This module’s dimensions are 87 x 34 x 118 millimeters and its weight is approximately 0.18 kilograms.