User's Manual

CHAPTER 8 INTERFACE CONTROL DOCUMENTS (ICD)
APPENDIX A INTERFACE CONTROL DOCUMENTS (ICD)
ISSUE/REVISION DATE: 25 JULY 2007 TECHNICAL MANUAL
ISO 9001:2000 PROPRIETARY
Interface Control Document (ICD) ENTERPRISE ELECTRONICS CORPORATION
Rev No. 5 Page 7 of 21
Issue Date 25 July 2007 UM-130365
Distribution Data Collection
Module (DDC)
THE DATA PRESENTED HEREIN REPRESENTS THE INTELLECTUAL PROPERTY OF ENTERPRISE ELECTRONICS CORPORATION (EEC). THIS DATA MAY NOT BE DISTRIBUTED OR REPRODUCED BY
ANY MEANS WITHOUT THE EXPRESS, WRITTEN CONSENT OF EEC.
2.4 I/O Ports (J3,J4)
DDC, OPEN
The sixteen wide range discrete DDC inputs are connected to the 37 pin D connector J4 . Each group of
four discrete inputs has an associated pull-up selector, JP1 – JP4. By connecting a jumper between pins
1 & 2 a pull-up will be supplied via 4.7K Ohm resistor to +5VDC. Connecting a jumper between pins 2
& 3 will supply a +24 VDC pull-up voltage via the same 4.7K Ohm resistor. Each discrete input is buff-
ered by a 4.7K Ohm resistor and then a Zener diode regulated to 5.1 volts. A .1 mF capacitor is used as
a filter on each discrete input. Any one of the 16 discrete inputs can recognize a 1.7 to 30 volt signal
without damage to circuits.
JP1 – JP4 Pins J4 Pin Pullup
JP1 1&2 8,9,27,28 +5V
JP1 2&3 +24VDC
JP2 1&2 11,12,29,30 +5V
JP2 2&3 +24VDC
JP3 1&2 13,14,32,33 +5V
JP3 2&3 +24VDC
JP4 1&2 16,17,35,36 +5V
JP4 2&3 +24VDC
Table 5 – JP1-JP4 Pinout