Reading The Serial Numbers; Determining The Manufacturing Date; Examples; 86Ml8712020175 - Siemens SIMATIC TI555 System Manual

C.2

Reading the Serial Numbers

Determining the
Manufacturing
Date

Examples

86ML8712020175_

86ML8712020175G

86ML8801041324_

C-4 TI545/TI555 Controller and I/O Compatibility
The fifth through the eighth characters of the serial number determines the
manufacturing date. Figure C-1 shows how to read the serial numbers.
Serial Number
FF DD YY MM SSSSS C X
Figure C-1 Serial Number Definition
The following examples demonstrate how to read the serial number on the
modules.
This module was manufactured in December (12) of 1987 (87). This unit is
not compatible with the TI545/TI555 controller because it was
manufactured prior to January, 1988 and the letter G (designating that a
modification occurred) does not appear at the end of the serial number.
This module was manufactured in December (12) of 1987 (87). This unit is
compatible with the TI545/TI555 controller because it was manufactured
prior to January, 1988 and the letter G (designating that a modification
occurred) appears at the end of the serial number.
This module was manufactured in January (01) of 1988 (88). This unit is
compatible with the TI545/TI555 controller because it was manufactured in
January, 1988. (The letter G is not required if the module was
manufactured in January, 1988 or later.)
Not present with initial serial number;
a G appears here if the Series 505
Discrete Module was manufactured
prior to January, 1988 but was modified
for TI545/TI555 compatibility.
Serial Number Checksum
Unique Unit Identifier
Month of Manufacture
Last Two Digits of Year of Manufacture
Device Indicator
Family Indicator
TI545/TI555 System Manual