Siemens 6ES7232-0HB21-0XA0 – SIMATIC S7-200 EM 232, 2 AQ ±10 V DC, 12 bit, for S7-22X CPU only
Siemens 6ES7232-0HB21-0XA0 – SIMATIC S7-200 Analog Output from the S7-200 range. Status: discontinued by the manufacturer, no longer available new since October 2004; successor 6ES7232-0HB22-0XA0. Van Haelen supplies it refurbished or new in sealed factory packaging, with a 24-month warranty.
Also written as: 6ES7 232-0HB21-0XA0, 6ES72320HB210XA0
The Siemens 6ES7232-0HB21-0XA0 is the EM 232 analog output module for the SIMATIC S7-200 with 2 outputs ±10 V DC and 12-bit converter. The module is intended only for the S7-22X CPUs. Its predecessor was the 6ES7232-0HB20-0XA0. The SIMATIC S7-200 is the compact micro controller from Siemens for small machines and installations: CPU, power supply and inputs and outputs sit in one housing, and expansion modules are connected next to it. EAN 4025515162377. Siemens reports this type as no longer available and discontinued it on 1 October 2004; the successor is the 6ES7232-0HB22-0XA0. When replacing, switch the supply off, disconnect the bus connection to the CPU, mount the module in the same place, move the wiring and after switching on check the signals.
Available as
Product data
| Manufacturer | Siemens |
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| Part number | 6ES7232-0HB21-0XA0 |
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| Type designation | SIMATIC S7-200 Analog Output |
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| Series | S7-200 |
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| Manufacturer status | discontinued by the manufacturer, no longer available new since October 2004 |
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| Predecessor | 6ES7232-0HB20-0XA0 |
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| Successor | 6ES7232-0HB22-0XA0 |
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| ETIM | EC001420 |
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| HS code | 85389091 |
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| Country of origin | US |
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| Weight | 0,3 kg |
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| Dimensions | 5,10 x 7,60 x 10,20 cm |
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Documentation from the manufacturer
All products of the S7-200 series
All PLC I/O modules
Faults and fixes 6ES7232-0HB21-0XA0
Problems with 6ES7232-0HB21-0XA0: red SF LED on the module
An SF LED on a signal module means a channel or module diagnostic: missing load voltage (L+ 24 V not connected or a fuse), wire break on inputs with wire-break monitoring, a short circuit on an output, or wrong parameterisation. The CPU's diagnostic buffer names channel and cause. A module that keeps reporting SF after the cause is removed is usually defective itself.
6ES7232-0HB21-0XA0: one channel has stopped working or an output sticks
One dead channel with the rest working normally points to a damaged input or output stage, often from overvoltage, a short circuit or an inductive load without a flyback diode. Swap the wiring to a free channel to separate the module from the installation. If the channel is defective, replace the module; repairing single channels is rarely worthwhile.
What do I check when replacing a 6ES7232-0HB21-0XA0?
The same order number with the same or a higher product version (issue) fits without changing the configuration. Carry over the front connector with its wiring, put the module in the same slot and check the diagnostic buffer after power-up. On modules with parameterisation (analogue: measuring range, range selectors on the side) set the range modules to the same position.
Fault not fixed: replace, exchange or repair the 6ES7232-0HB21-0XA0?
Replacing from stock is the fastest route when a machine is down. Van Haelen supplies the 6ES7232-0HB21-0XA0 refurbished (tested, with a test report per serial number) or new in factory packaging, with a 24-month warranty. The current lead time is shown with the condition on this page. Prefer an exchange: you get a refurbished unit straight away and return the faulty one within 14 days. Repairing your own unit is also possible: diagnosis, then a fixed price.
What information should I send for a quick diagnosis?
A photo of the rating plate (order number, product version, firmware), the exact fault code or LED state, when the fault occurs (at power-up, on enable, under load) and what you have already tried. For PLCs an export of the diagnostic buffer, for drives the parameter set. With that we can usually say the same day whether replacing, exchanging or repairing is best.
Frequently asked questions
Is the 6ES7232-0HB21-0XA0 still available?
Not new from the manufacturer any more: the 6ES7232-0HB21-0XA0 was discontinued since October 2004. Van Haelen supplies it refurbished and tested.
What is the successor of the 6ES7232-0HB21-0XA0?
According to the manufacturer it is the 6ES7232-0HB22-0XA0. A successor does not always fit an existing installation without changes; replacing like for like is often the fastest route. If in doubt, ask us.
Does the 6ES7232-0HB21-0XA0 replace the 6ES7232-0HB20-0XA0?
Yes. According to the manufacturer the 6ES7232-0HB21-0XA0 is the successor of the 6ES7232-0HB20-0XA0. Before replacing, check that the project and the connections match the new version; if in doubt we also supply the 6ES7232-0HB20-0XA0 itself, refurbished or new, as long as it can be found.
What does refurbished mean?
Cleaned, inspected, aged or critical components replaced and tested to our test protocol for this product family. You get a 24-month warranty, a test report and a serial number label.
Can I exchange or repair my faulty unit?
Yes. With an exchange Van Haelen supplies a refurbished unit straight away and you return the faulty one. With a repair you first get a diagnosis and then a fixed price, with test report and warranty.