How to resolve "S_SYST_CLOCK_MX is not supported on this PLC" Error Message

When import S_RD_ETH_MX and S_RD_ETH_MX blocks into a Safety PLC program with wrong firmware version, you will get below Error Message.

If you then remove S_RD_ETH_MX and S_RD_ETH_MX blocks from the project, you will see S_SYST_CLOCK_MX error still remains.

If you then trying to find and delete this block, you will find that S_SYST_CLOCK_MX is not used anywhere. Cross-reference doesn't return any result.

Below is the solution:

S_SYST_CLOCK_MX is actually automatically created when you insert S_RD_ETH_MX or S_WR_ETH_MX block into project. To remove it, first you need to fully delete S_RD_ETH_MX and S_WR_ETH_MX from your project. Please see below steps:

Once these two blocks are fully deleted. Please export your project as ZEF


Last, you can open this .ZEF file and then you can build it without error message.

Released for: Schneider Electric Australia