125 	if (ctx->mbs_user_cb->coil_rd == NULL) {  in mbs_fc01_coil_read()
161 		err = ctx->mbs_user_cb->coil_rd(coil_addr, &coil_state);  in mbs_fc01_coil_read()
224 	if (ctx->mbs_user_cb->discrete_input_rd == NULL) {  in mbs_fc02_di_read()
262 		err = ctx->mbs_user_cb->discrete_input_rd(di_addr, &di_state);  in mbs_fc02_di_read()
338 		if (ctx->mbs_user_cb->holding_reg_rd == NULL) {  in mbs_fc03_hreg_read()
345 		if (ctx->mbs_user_cb->holding_reg_rd_fp == NULL) {  in mbs_fc03_hreg_read()
369 			err = ctx->mbs_user_cb->holding_reg_rd(reg_addr, &reg);  in mbs_fc03_hreg_read()
383 			err = ctx->mbs_user_cb->holding_reg_rd_fp(reg_addr, &fp);  in mbs_fc03_hreg_read()
450 		if (ctx->mbs_user_cb->input_reg_rd == NULL) {  in mbs_fc04_inreg_read()
457 		if (ctx->mbs_user_cb->input_reg_rd_fp == NULL) {  in mbs_fc04_inreg_read()
481 			err = ctx->mbs_user_cb->input_reg_rd(reg_addr, &reg);  in mbs_fc04_inreg_read()
495 			err = ctx->mbs_user_cb->input_reg_rd_fp(reg_addr, &fp);  in mbs_fc04_inreg_read()
544 	if (ctx->mbs_user_cb->coil_wr == NULL) {  in mbs_fc05_coil_write()
560 	err = ctx->mbs_user_cb->coil_wr(coil_addr, coil_state);  in mbs_fc05_coil_write()
602 	if (ctx->mbs_user_cb->holding_reg_wr == NULL) {  in mbs_fc06_hreg_write()
610 	err = ctx->mbs_user_cb->holding_reg_wr(reg_addr, reg_val);  in mbs_fc06_hreg_write()
746 	if (ctx->mbs_user_cb->coil_wr == NULL) {  in mbs_fc15_coils_write()
786 		err = ctx->mbs_user_cb->coil_wr(coil_addr + coil_cntr,  in mbs_fc15_coils_write()
859 		if (ctx->mbs_user_cb->holding_reg_wr == NULL) {  in mbs_fc16_hregs_write()
865 		if (ctx->mbs_user_cb->holding_reg_wr_fp == NULL) {  in mbs_fc16_hregs_write()
900 			err = ctx->mbs_user_cb->holding_reg_wr(addr, reg_val);  in mbs_fc16_hregs_write()
909 			err = ctx->mbs_user_cb->holding_reg_wr_fp(addr, fp);  in mbs_fc16_hregs_write()