Siemens6FX1138-6BB01SINUMERIK 880 PLC-CPU Card, Type 135WB/COP, 128 KB RAM, Software Version 4.x

Product Description

What this part is

This is a Siemens SINUMERIK 880 PLC-CPU board, type 135WB/COP with 128 KB RAM — the processor that scans and solves the machine’s PLC ladder inside the SINUMERIK NC rack. On an 880 control the CNC side handles the part program and the interpolation, and this card handles tool changer sequencing, coolant, hydraulics, guarding interlocks and operator panel logic.

It is a CPU-tier module, not an I/O card and not a communications board. The 6FX1138 block covers CPU cards, memory cards and interface cards under numbers that differ by two characters.

Decoding the order code

6FX1: Siemens SINUMERIK NC hardware prefix. The 6FX1 generation covers SINUMERIK 3, 8, 810/820 and 880 control racks.

138: the plug-in processor and memory card block within that generation.

-6BB01: the specific card, SINUMERIK 880 PLC-CPU 135WB/COP, 128 KB RAM. The 6 in the first position of the suffix marks the 880-generation card. The -5Bxxx suffixes in the same block are SINUMERIK 810/820 and 805SM cards, a different control. -6BL01 is the sister PLC 135WB CPU board in the same 880 range.

135WB: the Siemens SIMATIC S5 processor type the card is built around. COP denotes the coprocessor build.

Software version

This card is published as the 128 KB RAM PLC-CPU for software version 4.x. On a SINUMERIK 880 the NC software version, the PLC-CPU card and the machine’s PLC program are a matched set: a card built for one software band boots in a rack running another and then fails to accept or correctly execute the machine program. The software version appears on the control’s diagnostic screen and the card number on the board being replaced.

Published specifications

Function: integrated PLC processor for the SINUMERIK 880 CNC control.

Type designation: PLC-CPU 135WB/COP.

User memory: 128 KB RAM.

Software band: version 4.x.

Form: plug-in card for the SINUMERIK 880 NC rack backplane.

Memory

128 KB is the figure that decides whether a machine’s ladder fits, and on an 880 that ladder is usually large: a machining centre with a chain magazine, pallet changer, probing and full guarding interlocks fills a PLC program quickly. A smaller-memory variant gains headroom moving to this card, and a larger-memory program does not fit it. The memory is RAM, so the rack’s backup battery is a maintenance item: a flat battery on a stored or unpowered card means the PLC program is gone and is reloaded from the machine builder’s archive.

Quantity and configuration

One card ships. No NC rack or backplane, no CNC CPU or NC memory cards, no EPROM or memory submodules, no battery, no operator panel, no I/O modules, no programming cable or PG unit, no software and no documentation are included.

Interchange guidance

Searched as 6FX1138-6BB01, 6FX11386BB01, 6FX1 138-6BB01, 6FX1138 6BB01, 6FX1138-6BBO1 (the letter-O misreading is common) and SINUMERIK 880 PLC CPU 135WB. 6FX1138-6BL01 is the sister PLC 135WB CPU board in the same 880 range and is the closest relative, carried as a cross-reference at a different memory and build. The 6FX1138-5BB03 and -5BB04 cards in the same numbering block are SINUMERIK 810/820 and 805SM CPU modules, a different control generation, and are listed here as rule-outs. SINUMERIK 880 is obsolete; Siemens’ current equivalents are SINUMERIK 828D and 840D sl, which are complete control retrofits rather than card swaps. Support for the 880 runs through repair-exchange and surplus.