Specifications

Publication GMC-SG001E-EN-P — June 2001
1394 Drive System Family 4-29
DH-485 Specifications (1394x-SJTxx-C-xx, -L-xx, and -T-xx)
Flex I/O Specifications (1394x-SJTxx-C-xx, -L-xx, and -T-xx)
Specification Description
Number of DH-485 channels One; replaces serial port B when used
Channel type Optically isolated half-duplex RS-485
Baud rate 9,600 or 19.2 kbaud (user-selectable)
Front panel connectors Two RJ-45 jacks (+24V is not provided)
RS-485 User-selectable 220 ohms resistor via internal switch
Node address User-selectable between 0 and 31 inclusive
Node type Token-passing master
Accessible data type
• One binary file (B3) for up to 16,384 bits
• One integer file (N7) for up to 1,024 16-bit values
• One floating point file (F8) for up to 512 32-bit values
• One ASCII string file (A) for up to 2,048 characters
• Nine user-configured files; each can be individually configured as any of the
above types or as a BCD file for floating point simulation
Specification Description
Maximum number of Flex I/O modules 8
Compatible modules
• 1794-IB16; 16 24V DC discrete inputs
• 1794-IA8; 8 115V AC discrete inputs
• 1794-IE8; 8 current/voltage analog inputs
• 1794-OB16; 16 24V DC discrete outputs
• 1794-OA8; 8 115V AC discrete outputs
• 1794-OE4; 4 current/voltage analog outputs
• 1794-IE4XOE2; 4 current/voltage analog inputs and 2 current/voltage analog outputs
• 1794-IB10XOB6; discrete combination module
• 1794-OW8 relay output module
• 1794-IF4I isolated analog input module
• 1794-OB16P discrete output (protected)
Interface Direct; no 1794-ASB or other adapter required