Siemens PLC Central Processing Unit 6ES5102-8MA02
6ES5102-8MA02
Siemens
Siemens PLC Central Processing Unit 6ES5102-8MA02
Home > Siemens > SIMATIC S5 > 6ES5102-8MA02 Need Siemens 6ES5102-8MA02? PLC Central Processing Unit with integrated power supply for SIMATIC S5-100U. …
Specifications
| Brand | Siemens |
|---|---|
| Model Number | 6ES5102-8MA02 |
| Official Product Name | SIMATIC S5-100U CPU 102 Central Processing Unit |
| Applicable System | SIMATIC S5-100U (not for S5-95U / 115U / 150U racks) |
| Product Type | PLC Central Processing Unit with integrated power supply |
| Equivalent Standard | STEP 5 programming (LAD / FBD / IL) |
| Product Status | In Stock |
| Internal RAM | 2 KB (approx. 2048 statements) |
| Program storage | RAM plus EPROM/EEPROM submodule slot (6ES5 370 family) |
| Binary execution time | approx. 7 us |
| Timers | 32 (0.01 ... 9990 s) |
| Counters | 32 (0 ... 999) |
| Flags | 1024, of which 512 retentive |
| Max digital I/O | 256 points |
| Max analog I/O | 16 points |
| Supply voltage | 24 V DC (18 ... 34 V DC permissible) |
| Integrated output voltages | +9 V DC (I/O bus), +5.2 V DC (PG interface) |
| Backup battery | Lithium 3.4 V / 850 mAh (approx. 5-year service life) |
| Communication | PG port, STEP 5 programming |
| Dimensions (W x H x D) | 91.5 x 135 x 120 mm |
| Weight | approx. 650 g |
| Operating temperature | 0 ... +60 C horizontal, 0 ... +40 C vertical |
| Mounting | 35 mm DIN rail (EN 60715) |
| Architecture | 8-bit microprocessor |
Product Description
It combines the processor and an integrated power supply in one module, accepting 24 V DC and internally deriving 9 V DC for the I/O bus and 5.2 V DC for the programmer interface. Program memory is 2 KB of RAM (about 2048 statements), backed by a 3.4 V lithium battery, with a front slot for an EPROM/EEPROM submodule for permanent program storage. The CPU supports up to 256 digital and 16 analog I/O points across S5-100U expansion modules and is programmed with STEP 5. As the entry-level CPU of the S5-100U line it is widely used to maintain legacy small-machine and building-services control panels. The Siemens 6ES5102-8MA02 is a CPU 102 central processing unit for the SIMATIC S5-100U compact programmable controller family.
Basic Product Information
- 2 KB internal RAM (approx. 2048 statements) with an EPROM/EEPROM submodule slot for permanent program storage
- 32 timers (0.01 to 9990 s) and 32 counters (0 to 999, up/down)
- 1024 flags, of which 512 are retentive
- Supports up to 256 digital and 16 analog I/O points across S5-100U expansion modules
- Battery-backed data retention with a 3.4 V / 850 mAh lithium cell (approx. 5-year service life)
- Combines the CPU and a 24 V DC power supply in one S5-100U module, deriving 9 V DC for the I/O bus and 5.2 V DC for the PG interface
Technical Specifications
Version & Model Difference
Within the S5-100U family the CPU 102 is the entry-level processor: the CPU 103 provides 10240 statements, 128 timers/counters and an extended instruction set, while the CPU 100 has no integrated power supply. The -8MA02 suffix identifies the 24 V DC version with integrated power supply. The CPU fits S5-100U racks only and is not interchangeable with the 95U/115U/150U families.
Application Scenarios
- Maintaining legacy S5-100U small-machine control panels
- Conveyor and packaging ancillary-cell sequencing
- Building-services and HVAC unit controllers
- Remote pump-station and skid control where S5-100U was standardized
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Frequently Asked Questions
What power supply does the 6ES5102-8MA02 need?
It requires an external 24 V DC supply (18 to 34 V DC) and internally generates 9 V DC for the I/O bus and 5.2 V DC for the programmer interface, so no separate S5 PSU module is needed.
Which programming system is used for this CPU?
The CPU is programmed with Siemens STEP 5 software using LAD, FBD or IL, via the PG port.
How is the program stored on the 6ES5102-8MA02?
It runs from 2 KB internal RAM and accepts an EPROM/EEPROM submodule in its front slot for permanent, battery-independent program storage.
Can the CPU 102 be used in an S5-115U rack?
No. The 6ES5102-8MA02 is an S5-100U CPU and is only compatible with S5-100U racks and expansion modules.
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