What the -60 suffix means
The FR-A840-02160-2-60: This unit includes circuit board coating (3C2) and omits plated conductor finish. Coating protects the PCB from humidity and conductive dust.
Type -2 - CA designation
The type code -2 - CA identifies this as a standard model (type -2) in the CA construction variant. This is a catalog identifier that confirms the unit is a base FR-A800 with no optional communication or I/O hardware pre-installed.