The pointers to the PDO are 0x1600 .. 0x16C0 and 0x1A00 .. 0x1AC0.

This is a normal offset pattern for a multi axis node. The offset per axis is 0x40, so 1600, 1640, 1680, 16C0 and 0x1A00, 0x1A40, 0x1A80 and 0x1AC0.