Hardware reference guide

Intelligent/Special Purpose
388
35013379 02 October 2007
Specifications The following table shows the specifications for the ASCII interface two channel
module.
Specifications
Data Interface
RS-232C 2 serial ports (9-pin D-shell), non-isolated
Cabling (Maximum cable length
20 m shielded)
990NAA26320, Modbus Programming Cable, RS-232, 12
ft. (2.7 m)
990NAA26350, Modbus Programming Cable, RS-232, 50
ft. (15.5 m)
Firmware Specifications
Port Performance Burst Speed: 19.2 k baud each port. Continuous Speed:
Application dependent
Depth of Nested Messages 8
Buffer Size 255 Input. 255 Output
Number of Messages 255
Maximum Message Length 127 characters plus 1 checksum
Memory
RAM 256 kb for data and program + 2 kb dual port ram
Flash-ROM 128 kb for program and firmware
Power Dissipation 2 W max
Bus Current Required 300 mA
Fusing
Internal None
External User discretion
Required Addressing 12 Words In
12 Words Out
Compatibility
Programming Software Modsoft V2.4 or Concept 2.0 at a minimum
Data Formats Supported Text, Decimal, Fixed Point, Nested Write Message, Set
Register Pointer, Print Time/Date, Repeat, Space,
Newline, Control Code, Flush Buffer
Quantum Controllers All, Executive V2.0 at a minimum
Battery Backup Module 140XCP90000
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com