CG 47 CLASS ADVISORY NR 13-93
WEAPON CONTROL SYSTEM - CLOSE INWEAPON SYSTEM (WCS-CIWS)
DIGITAL INTERFACE
RMKS/1. THE PURPOSE OF THIS ADVISORY IS TO PROVIDE INFORMATION
CONCERNING A WCS/CIWS DIGITAL INTERFACE ISSUE. THIS ADVISORY
APPLIES TO BASELINE 1 THROUGH 4 SHIPS WITH CIWS BLOCK 0 AND BLOCK
1 BASELINE 0 CIWS DIGITAL REMOTE CONTROL PANEL (RCP) (CG 49 AND
59 THROUGH 67).
2. BACKGROUND. TESTING OF THE WCS/CIWS INTERFACE HAS REVEALED A
PROBLEM ASSOCIATED WITH A CIWS WEAPON CONTROL GROUP (WCG)
COMPUTER PROGRAM RELOAD, PERFORMED UNDER ONE OF THE FOLLOWING
CONDITIONS:
A. IF WCS IS ON-LINE AND EXECUTING AND THE CIWS COMPUTER
PROGRAM IS RELOADED WITH THE CIWS REMOTE CONTROL PANEL (RCP) SET
FOR REMOTE AEGIS DESIGNATIONS (AUTO DESIG ENABLE LIT WHITE AND
CIWS IN RCP CONTROL), CIWS WILL NOT COMMUNICATE WITH WCS.
B. IF WCS IS BROUGHT ON-LINE FOLLOWING CIWS PROGRAM RELOAD
WITH THE CIWS RCP SET FOR REMOTE AEGIS DESIGNATIONS, CIWS WILL
REPORT "STANDBY" MODE TO WCS EVEN THOUGH THE ACTUAL MODE IS "AIR
READY" OR HIGHER.
C. IN BOTH OF THE ABOVE SITUATIONS, THE WCS COMPUTER WILL HOLD
A CIWS STATUS OF NON-TACTICAL AND UNAVAILABLE. IN THIS CASE, WCS
CANNOT DESIGNATE A TARGET TO CIWS UNLESS BATTLESHORT IS ENABLED
AT THE COMPUTER PROGRAM INTERFACE SUPERVISION (CPIS) SUBMODE.
THE RCP WILL SHOW CIWS ALIGNED TO ACCEPT WCS DESIGNATIONS, BUT THE
MSS AND AAWC CROS WILL INDICATE CIWS IS NOT AVAILABLE FOR
DESIGNATION. THIS PROBLEM WILL BE CORRECTED BY INSTALLATION OF
THE CIWS USN 0015 (BLOCK 0 DASH 15) OR USN 1005 (BLOCK 1 BASELINE
0 DASH 5) COMPUTER PROGRAM (SCHEDULED FOR RELEASE IN NOV 93 AND
APR 94 RESPECTIVELY). THESE PROGRAMS INCORPORATE LOGIC WHICH
CAUSES THE RCP TO INITIATE VALID COMMUNICATIONS WHEN THE CIWS
COMPUTER IS RELOADED. AEGIS INTEGRATION IS SCHEDULED AS FOLLOWS:
B/L 1.4.1 (CG 49) - JUL 94
B/L 3.2.6 (CG 59 AND 60) - FEB 94
B/L 3.2.6 (CG 61 THROUGH 64) - AUG 94
B/L 4.2.7 (CG 65 THROUGH 67 - AUG 94
D. CIWS USN 0015 APPLIES TO CG 59 AND CG 60. CIWS USN 1005
APPLIES TO CG 49 AND CG 61-67. THIS ADVISORY DOES NOT APPLY TO
CG 47, 50, 51, 53-56, 58, AND 68-73 WHICH HAVE THE COMPUTER
CORRECTION VIA USN 1102 AND 1201. CG 48 HAS ANALOG INTERFACE.
CG 52 AND 57 DO NOT HAVE INTEGRATED WCS PROGRAM.
3. ACTION. PRIOR TO RECEIPT OF THE NEW CIWS COMPUTER PROGRAM,
PERFORM THE FOLLOWING:
A. IF THE CIWS COMPUTER IS RELOADED WHILE CIWS IS SET FOR
AUTO DESIGNATION, PLACE THE RCP "RCP/LCP" KEY SWITCH IN THE "LCP"
POSITION. FOLLOWING THE COMPLETION OF THE COMPUTER PROGRAM
RELOAD, WHEN THE SYSTEM IS IN "AIR READY" MODE, PLACE THE KEY IN
THE "RCP" POSITION. THIS ESTABLISHES WCS/CIWS INTERFACE
COMMUNICATIONS.
B. IF THE WCS COMPUTER IS BROUGHT ON-LINE FOLLOWING A CIWS
COMPUTER PROGRAM RELOAD, PLACE THE RCP "RCP/LCP" KEY SWITCH IN THE
"LCP" POSITION. WHEN WCS IS ON-LINE AND EXECUTING, PLACE THE KEY IN
THE "RCP" POSITION. THIS ESTABLISHES WCS/CIWS INTERFACE
COMMUNICATIONS.
4. FOR COMNAVSURFLANT/COMNAVSURFPAC - RECOMMEND AFFECTED SHIPS
BE TASKED TO ADHERE TO THE PROVISIONS OF PARA 3 ABOVE.
5. FOR NWSCDD (CODE N21, N25) - SCHEDULE CIWS USN 0015/1005
COMPUTER PROGRAM INSTALLATIONS AS SOON AS POSSIBLE AND NOTIFY
ORIG BY MSG WHEN CIWS USN 0015/1005 PROGRAM HAS BEEN INSTALLED IN
AFFECTED SHIPS.
6. THIS ADVISORY HAS NO IMPACT ON EOSS, CSOSS, PMS, FMP, TEST
PROCEDURES OR TECHNICAL DOCUMENTATION. IT WILL BE CANCELED WHEN
THE CIWS USN 0015/1005 COMPUTER PROGRAM HAS BEEN INSTALLED IN
AFFECTED SHIPS.
7. POINT OF CONTACT IS MR. N. S. SMITHSON, PMS400F511, DSN:
332-5981 (EXT 133) OR COMM (703) 602-5981. TECHNICAL POC IS CDR J.
WILSON, PMS400B30A, DSN: 332-7090 (EXT 222) OR COMMERCIAL (703)
602-7090.//
CG-47